You could even glass over that silicon and the glass would flex.

I don't think flexing and stress risers are a problem, but it seems you have a great solution that would work fine on composite production boats.

Shawn

: In order to save myself time and also address the flex issue (if it exists) I
: used silicon sealant to tack the solid bulkhead in place, a couple spots
: around the bottom third of the bulkhead where I left an 3/16 inch gap.
: Then I glassed it in from sheer to sheer under the deck and used the
: silicon to put a bead around the rest. It was quick and I ended up with
: solid support for the deck and a small space for flex between the hull and
: bulkhead on the bottom. I'd admit it was a waste of time if it wasn't at
: least as quick as glassing in a tight rigid bulkhead.