Just don't sit down when you are riding it, that surely sets you up for crashing.
I find that (And I'm goofie and prefer to be on the right side of TBars) that if there's a skier next to me that I try and be lazy and have them edge enough to stay on the track and then I edge the opposite way (towards the middle) so that my edges stay away from their skis.

And I try and have most of my weight split between my feet and lean against the t-bar. Of course the only t-bar I've ridden is at Breckenridge and that has QUITE a bit more vertical pull than it does horizontal.
