Slow leak from seam rupture?
Hey, so I've got a raft leak that has me stumped. Can't locate it anywhere with soapy water and am getting tired of looking for it. So a couple questions if anyone can help:
First, if the leak was caused by failure to bleed the tube enough for the hot weather (a definite possibility), would it be more obvious? Is it possible for that to occur at the seam but still hold air for a couple days, or is that more likely to be a major rupture?
I haven't messed with the valve yet, but I did try to soap it up and saw what I thought was a very large bubble (the width of the entire valve) form and pop pretty quickly. Difficult to replicate that result so I wasn't sure what to make of it. Is it more difficult to find a slow leak at the valve with soap bubbles? Can expansion due to heat affect a valve too?
Is there anywhere else I should be focusing my attention? Boat is a PVC Vanguard.
Thanks for any insight here. I'd really like to get this sorted out and fixes before the season ends.