RTF, my 'research" found dinghy specific liquid sealants you pour in via the inflation valve,you inflate and roll and turn the dinghy around to distribute the goo. The sellers say it is very successful(they would, wouldn`t they).I might resort to it if the soapy water technique failed to identify the air leak. It might be good on generally porous tubes, but if the dinghy is that leaky, it`s the dumpster, though I believe people do re-tube hypalon dinghies,but it is not cheap.
Sorry Peter, no house calls, find a quiet hour, go over the seams with soapy water, air leaks are easier to find and fix than water ones.
I notice my dinghy has just one overinflation relief valve, for the bow chamber. That reinforces my view the side tubes influence the bow one, so overinflation of a side chamber could press on the bow chamber, causing it to, ahem, relieve itself, and thereby relieve the side chamber.
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BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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