anybody got an opinion on what i should do? i have a 2002 ultra 21 xs with 2 6x9's, 4 4.5"'s, 2 diamond pro audio 12"s and one pos amp that all came in the boat when i bought it. i upgraded to the alpine ipod/siruis deck and also have 2 blue top optimas with a perko switch. i am going to buy 3 new blue tops before i take it out again because 1 for the stereo wasnt cutting it last season and i believe there 4 years old and the boat didnt want to start the last time out. the amp would heat up and shut off after about 30-45 mins and from what i can see its powering all of the speakers. should i go with one big ass amp like a jl or some other brand with 5 or more channels or should i go with a 4 channel for the mids and highs plus a sub amp? if i go with two amps will i need more than 3 batteries and what about the alternator?