I also rode today and paid attention.. Conditions weren't bad considering its mid march on the east coast.. Basically a mixture of hardpack over some ice and the occasional loose granular. Flat basing without some kind of pressure was next to impossible to do and feel any semblance of safety. Unfortunately the day got cut short because my girlfriend caught her heelside edge and took a nasty spill on her tailbone.
Probably alot of this has to do with the type of board you're on too.. I love my Evo, and I regularly hit 35mph+ on it, but that's when I'm holding a tight edge and really working the board. It's simply too soft to feel stable at high speeds without alot of edge pressure. I can't even imagine trying to bomb a hill on it totally flat.. As it is I know that I am constantly compensating for the terrain by adjusting pressure.
Never Summer Evo 153/Union Force
Gnu Danny Kass 155 BTX/Burton Cartel