Here's my experience with snails & water coming in the open exhaust valves. I didn't have flappers, 1st mistake, I came in a little fast to shore and cut the engine, 2nd mistake. Water rushed in due to no flappers and washed over the snail allowing water into open exhaust valves causing a milkshake.So it is correct? Is it to help cool the Snail by going up around and out? Water will not get back into the valves?
Your current method sounds correct, but will change somewhat when you install and replumb with the thermostat kit The Snails (risers) always get the water last as said they are jacketed and have an opening towards the top of the hump to dump the water to the tips Tom"The plumbing is like most, Pump.. "T".. Logs.. Motor.. Out thermostat area.. to the Snails"
" I just purchased the relief valve and a thermostat kit"