I am glad to see that you became a member. Yesterday at Cass Lake was pretty much a bust for me. I was briefly able to get planing in the straps a couple times (6.3, 105 liters). I could have used 5 or so more knots.
Off topic, here are a couple links related to the unique Bellport Scooter ice boat I mentioned:
This is a bit of sailing history being kept alive by a group of enthusiasts. Representing the new generation are windsurfers who attach blades to the bottom of repurposed skateboards, mount the sail to the deck, and keep in shape off-season.