On Thu, 07 Aug 2008 00:13:34 -0400, Wayne.B
wrote:

On Wed, 6 Aug 2008 23:45:49 -0400, "Eisboch"
wrote:

It seems like we would be hearing of many more problems and line failures if
ethanol was the primary cause.
I am thinking of your location and the effects of exposure to strong sun on
a regular basis.

Sun/UV damage is a distinct possibility, especially since the dinghy
gets a lot of it.

That would do it.

I don't know how true this is, but I've heard that ethanol/UV
combination on exposed fuel tanks in small boats is fairly lethal to
the rubbers used in manufacturing the lines. I do know at my dealer
that they've gone through a bunch of fuel line this year - unusually
so according to the service manager.

Eisboch nailed it - exposure.