Hey Bill, it's the Sonnet 16. His design calls for HDPE snaps to attach the keel to the stations, and the cross-sections to the stringers.

I thought I might have needed it for the strongback as well, but if plywood will serve the same function I'll just use that.

: Would help alot to know which boat you're building. From the description I'm
: guessing one of the folders. If that's the case you'll need the plastic
: for parts of the boat, perhaps quite a bit more than you think. If it's
: not for a folder you don't need any plastic at all.

: Bill H.