Yes wider skis is critical. The Yamaha Mtn Skis are very good. Stay on your feet (don't put even your knee on the seat) you need to move your weight around front to back and side to side reacting to what the sled is doing and where you are going next. There is a happy medium for throttle, don't just pin it when in deep. Find the sweet spot which is different depending upon the situation. You can also help the track climb on top by working the sled side to side. In other words don't just let the track sit on the same plane or it will go steadily down. Only stop pointed downhill (at least slightly). Plan ahead far enough so you can concentrate on the immediate terrain better. Incidentally year after year I seem to forget most of this and have to relearn it over and over again. It does come back quickly, but summer is far too long to keep my limited skills sharp.
Also, watch any boondocking video that shows Bret Rasmussen or Chris Burandt. There are many many very good riders out there, but these 2 have the sled control concept mastered. Mortal men can't do what they do, but we can sure learn things by watching them.
Oh, and did I mention don't fail to see and avoid little insignificant trees that grow suddenly just as you make contact and become big enough to knock you clean off your sled. That rarely turns out very well, or so I've heard . . .
Another thing I have learned is to accept and even enjoy (to a point) being stuck. If you aren't getting stuck, you aren't trying hard enough.
