I ride fields with an old beater Burton Air 6 sidecut o' plenty, with origanal factory bindings, no highbacks.
Very comfortable, I'm with Kris, losing the highbacks is the key.
I ride lakes with the Best Summit, being the Snowkite specific board with just a hint of sidecut, with the same
binding set up. Bought some old Burton bindings with the beefy molded heel and chucked the highbacks.
While the slim sidecut seams cooler, I don't think it makes any difference, other than edging
hard doesn't result in the board trying to carve upwind in a short distance.
The banana boards with reverse sidecut and reverse camber like what Chanson is talking about, like the 3B boards, are good if you are not edging on a hard
surface, and basically made to work well if you ride fully in Utah powder. Or at least that is what Andy Bolt has told me in the past.http://www.shop.3bsnowboards.com/3B-Billy-Bordy-Pro-model-181-x-333-2014001.htm
Anyway, taking off your highbacks or getting some cheap used bindings that will work without highbacks
is a real cheap solution to getting rid of the burn from pressing your front leg calf back against the highback
Recall how you ride on water, front leg straight, leaned back, and the highback is not conducive of that stance.http://splitboard.com/talk/viewtopic.php?f=11&t=12307&st=0&sk=t&sd=a