Transom Tow Eye on Jet Boat
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Transom Tow Eye on Jet Boat

  1. #1
    Senior Member LIL WAKE's Avatar
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    Default Transom Tow Eye on Jet Boat

    So I am wanting to add a tow eye to the transom on my mini jet boat.

    When I converted it from an outboard to jetboat I removed all the rotten wood from the transom and replaced with 6 layers of glass. I didn't use wood because it wasn't going to be supporting the weight of an outboard anymore.

    Now I am wanting to add a tow eye and am wondering how thick the fiberglass should be to support the weight of skiers, wakeboarders, and tubing.

    Right now the glass is about 3/8" thick. Should I reinforce or is this enough? If I should reinforce, should I do this just round the tow eye location, or the entire transom?

    My other option is to put the tow eye on the swim platform that will be fabricated in the next couple of months, or use the tie down loops that will be welded onto the swim platform. (see rendering below).







    Swim Platform rendering. The (6) blue spots are the mounting points.


    Thanks!

    1988 Addictor 333 powered by Seadoo 787cc Rotax (110hp)

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    Senior Member hihosilver's Avatar
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    mounting a ski eye low dorsn't work good as the rope is in the water mount it high like a wake boat

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    Is it possible to use/ modify some type of engine mount ski tow. Not sure if you have an engine cover or how low the motor sits but I'd go for engine mount before transom. Imo

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    AKA OhOneWS6 Last Mohican's Avatar
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    Put the tow point on the top of the tower when you build it.

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    Senior Member Sleek Freak's Avatar
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    Quote Originally Posted by Last Mohican View Post
    Put the tow point on the top of the tower when you build it.
    X2

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    I dont think that little boat has enough mass for a tow hook on a ski tower. When you floor it with a person in the water it might flip. Is there room for a spotter and a skier in that? (CA law) I ski off the eye on my jet ski with no issues. Be safe, schick
    Half the people in the world are below average.

  8. #7
    JWT
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    Not to go off topic, but dang you did a nice job!

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    Senior Member LIL WAKE's Avatar
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    I appreciate all the feedback, but I should have specified...I still will be using the wake tower for pulling skiers and wakeboarders. The tow eye will be used for tubes because I don't want to bend the tower. I think it would be way too much drag for an aluminum tower, especially if the tube submarined. I want to reinforce the transom enough to use a tow eye for the tube only.

    That said, my original question is still in need of an answer. How should the transom be reinforced (i.e. how thick of fiberglass, or should a stainless steel or plywood plate be mounted on the inside of the transom to displace the pressure over a larger area, etc)

    Thanks guys!!



    JWT, Thanks man!

    schick, The boat will put just fine with the tower. There are smaller lighter jet skis with custom towers pulling wakeboarders and even when they cut hard outside the ski hardly budges. About seating, the boat seats 3 across on the bench. I also believe MN law allows boats with a factory installed mirror to tow without a spotter. I will just say it's factory installed. It will be hard to believe it's not when this boat is complete

    1988 Addictor 333 powered by Seadoo 787cc Rotax (110hp)

  10. #9
    Or Seth, either one Budweiser's Avatar
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    If there's any way to do it, I'd try to install something right behind the back seat. Maybe a removable pole like a tournament style ski boat.

    There's a reason they are mounted in the middle of the boat. If you tow from the rear you lose a lot, if not all steering at low speeds, depending on what you're towing. There are other benefits, but a closer to center mounting point will offer benefits if you can make it happen.

    As far as 3/8" thick fiberglass, my gut tells me it would be plenty stout. However, if it were me, I'd probably back it with something more than a fender washer. Maybe glass in a strip of 3/8"-1/2" plywood... Just so I never have to think about it.

    Something like this, even shorter (don't need to clear outboards), would be the hot ticket.



    Good luck!
    -Seth-

  11. #10
    Or Seth, either one Budweiser's Avatar
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    Another good option is to put 2 eyes in, one on each corner of the transom, and use one of these for towing toys 'n such. It should help you be able to steer correctly.


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    Senior Member sandeggo's Avatar
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    How thick is the floor and the transom?

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    Senior Member LIL WAKE's Avatar
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    Quote Originally Posted by Budweiser View Post
    Another good option is to put 2 eyes in, one on each corner of the transom, and use one of these for towing toys 'n such. It should help you be able to steer correctly.

    That's a cool little thingamajigger! I will definitely check those out! What's it called?

    Quote Originally Posted by sandeggo View Post
    How thick is the floor and the transom?
    Most parts of the transom are 3/8" and I would say the floor is probably about 1/4" in most areas. The area around where the pump sticks out of the transom is probably close to 1/2" thick and around the stringers and the seam where I bonded the jet ski hull section to the boat is probably even thicker than 1/2".

    1988 Addictor 333 powered by Seadoo 787cc Rotax (110hp)

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    Senior Member sandeggo's Avatar
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    If it was me, I would get a piece of flat bar and weld about a 6" piece of pipe to it. Bolt that piece to the inside of the transom. Drill a hole in the top of the transom and slide this into the pipe bracket.
    http://shopping.rexmar.com/Merchant2...ode=skipoles24

    Orrrrrr.

    Bolt one of these on the back and call it golden
    http://shopping.rexmar.com/Merchant2...towstransombil
    You could use a piece of aluminum plate to spread the load out, instead of relying on fender washers
    Last edited by sandeggo; 02-06-2013 at 08:16 PM.

  15. #14
    Or Seth, either one Budweiser's Avatar
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    Quote Originally Posted by LIL WAKE View Post
    That's a cool little thingamajigger! I will definitely check those out! What's it called?.
    I thought it was called a Ski Devil, but that must be the old school name. They're now called a Tow Demon. Airhead Tow Demon.

    Looks like they have a new school version, which I think better suites your boat. It's also by Airhead, "self centering tow harness".



    You may have to shorten either to have it work properly with your narrow beam.

    For the first time EVER, I think I stumped YouTube. Can't find a video for it

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