not "always" or at least not necessarily continuous - at season end we at Crystal sometimes surf over patches of grass and puddles to get to the base deck - it's fun
On my rock / rail / whatever board - 2 degree base bevel, detune tips, and sharp side edges.
Waxing almost every day and it sure pays! (don't do much structuring, though)
I also file my sidewalls / topsheet edges to round them a bit so that skiers can do less damage when they step all over my machine in the lift line. I hate it when they start slicing strings and chunks from the topsheet My board doesn't have to be pristine, but I am only OK with what I do to it...