Hey Bender, took the iSubmarine out today, it doesn't really slog that well does it.
I found it difficult to get planing, but when it gets up geez doesn't it go! It felt like I got a knot or two more than I would have on the other boards I've tried. 21 knots going upwind in very very marginal conditions isn't bad.
New fin went well also, did a lot of rearranging the rocks on the bottom, not a scratch on the fin, love that G10 feeling