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+ but that's when I'm holding a tight edge and really working the board.
I'd say, the equitation could look like that: Terrain+condition * board shape * riders ability+confidence = flatbase safely
Assume the same terrain+condition
(same resort 10 years every weekend, long runouts with flat hardpack in the morning, softer in afternoons, about 25° at the beginning, no bends, good overview, you need a certain speed to reach the snow-bar) AND the same rider (I'm rather precautious, no daredevil like the guys), the board shape
variable made a big difference to me.
- On Custom X/Liberty Carbon (camber): never flatbased, too afraid to catch an edge, never reached the bar (no idea about the speed, had no app then).
- On Raptor (hybrid rocker): no way, the rocker felt too wiggly, only reached 43mph: walk to the bar.
- On Flagship (technically hybrid camber but actually flat): now flatbasing commonly and with confidence (up to 50mph): even had to break at the bar
But if you add a bit of riders ability+confidence
, the board shape
will be compensated, a.s.o.