Mike, the drogue size is going to have to be a function of several things:
- boat size & windage
- overall length of deployment line
- sea state

So, we're not really looking at anything substantial for a lightweight cat - just something to keep it from exposing the tramp to a lot of windage. I think the one for 20' monohulls is too big, but haven't tested this hypothesis.

I think Jake's got one about 2' diameter, right? I suspect about 50' of line?