The bubbles come from beneath the waterline (obviously) or I could not see/hear them. AFAIK they are near the weld lines. I sealed all the welds with flex-seal but I could still hear some “bubbles” when i launched this week. It only goes on for a few minutes, so if there is a “leak” it likely is not letting much in.
Considering how these toons are built, I am guessing this is fairly common, but not everyone is as anal as I (engineer…).
Again, when I pulled the boat last fall, there was no sign of any water leaking back out, no sloshing, and the boat was not unreasonably heavy to winch on the trailer. I am thinking it may be the pressure differential forcing out some air when the toons are partially submerged (Boyle’s law).
I’ll throw this out to the crowd: when you launch this year, if it is a quiet area, pay attention and see if you can hear/see any bubbles.
Thx, Bill
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