Unfortunately the Teth Air doesn't help you if you don't get more than a couple feet away from the sled. A conventional tether will stop the motor if you go over the bars. Teth Air won't unless you are far enough away.
I've been using mine all season.
Once I got the antennae cut down to a really short length, mine works really well.
I can walk around my back bumper really quickly without the sled shutting off. But if I go slow, it shuts off.
I can't get around the front bumper and keep the sled running hardly ever at all...unless I run.
I've had my sled shut off a couple times going down the trail or booning through the trees 3 or 4 times this year. Hasn't done it in over a month though. The only thing I think that I have been doing different is having the tether transmitter on my wrist instead of up by my elbow. That seems to have taken care of it.
My buddy, however, has problems. His shuts off quite often. Almost every trip out.
The last ride, it shut off as he was turning out of a climb. He got lucky and didn't roll his sled and he got it pointed downhill again.
He began to coast downhill.
We saw his headlight come on about the 3rd or 4th pull. Not sure what his deal is.
Hehas his antennae a bit longer than mine and the remaining pink rubber cover is still there.
He got tired of it and unhooked it halfway through that day.
Not sure if he's called in to get tech support or not.
It's a 13 Pro RMK with a brand new system which has had the the engine reverse update thing done in December.
Given my engine stopping and his engine stopping....(I think there's an easy solution to that), I'd buy another Teth-air over a tether any day.
--SS