The nice thing about packed down hiking/fat bike trails is that the trench guides your skis. Like Krummholz said, most of the time the best thing to do is make friends with speed and ski the rut. A narrow snowplow helps the rut guide your skis and ensures that your tips don't catch on bushes or saplings (if the tails of your snowplowed skis brush against vegetation on the side of the trail, that actually helps steer you in the right direction). My technique for turns in the trail is skiing one ski at a time (the outside ski) and pressuring that ski into the outside bank of the rut. You can stem check with the inside ski before the turn if there is a bit of space.
This is the right answer, and the great thing about skis, when the vegetation allows for it.snow-mark wrote: I skied off trail, zig zagging back and forth through the trees
That works to slow down a bit. If there is fresh snow outside of the trench, you can put your ski in there, and that slows you down more. If you stem the ski that you were dragging, that will slow you down even more.MichiganNathaniel wrote: I resort to dragging one ski along the side of the trench
That is a really good technique. You can then do a kick-turn. It's really like doing uphill switchbacks, downhill. On a straight run, if there is a clearing on the uphill side of the trail, turn uphill into the clearing (you might need to jump-turn), or use the space for a hockey stop.MichiganNathaniel wrote: shooting off the trail and uphill at switchbacks,
I thought people were joking when I first read mention of this on the forum. Don't grab onto trees or branches! You are either going to dislocate something or get poked by a sharp stick. (It's ok to wedge your ski or shoulder against a tree, when going UPHILL). Wear eye protection, even if it's clear safety glasses.MichiganNathaniel wrote: grasping desperately at overhanging branches
IMO the biggest advantage of shorter skis on hiking trails is climbing, but they make descending easier as well. The narrow snowplow becomes more effective (the longer your skis, the less angle between their tips for a given width stance). You can "diagonal sideslip" them on narrower trails than you can with longer skis: point the tips to the uphill side and alternate between checking/sideslipping and pointing them more downhill, kind of twisting your way down the trail. Downhill pole plants help with that technique (they also work if you can start in a wide snowplow from a stop). Diagonal side-stepping downhill on off-camber trails is also a valid technique.MichiganNathaniel wrote: I have found that slightly shorter skis have made me feel a little better, on narrow trails.
That being said, my 205cm Fischer TN66 are a lot more fun on hiking/mountain bike trail downhills than either of my 195cm classic touring skis. The longer TN66 glide faster and turn better. I don't know whether it is the sidecut, the soft rockered tip, or the steel edges. Completely different story going uphill.