I once heard rumors of a plastic insert (or pair of inserts, never was really clear on that) that would fit on either side of the keel tube, and give you a more solid V shape on a SIB. Would have to have been designed specifically for your boat, in my case I was told it was specifically made for Achilled by someone (or maybe it was a third-party product... wasn't too clear on that, either.)
Seemed like a good idea at the time, looked but couldn't get any info on a supplier; have never heard of it since, either.
jky
__________________
|