What event are you talking about?
If it's the Natterjack there isn't really that much sand it's mostly the special test and I wouldn't setup for that unless you are really on for a championship place - it's what about 10 minutes total out of 5-6 hours? The going is sandy but not deep soft sand and there are plenty of roots and rocks in places. For Natterjack if you setup for anything I'd do it for those endless damn whoops!