I haven’t either, but I have been ripping through the trees on a race gas turboed 2 stroke wishing I had another 100 HP.
I have seen guys do impressive stuff on these heavy sleds despite all the hype about needing light sleds. I agree if you had the skills to ride a 700# sled as effortlessly as a lot of guys ride a 500# sled you would have to be ranked as the best of the best.
I do think it would be cool to see the schooled series of vids have a segment showing somebody following Brett and Chris around or even leading the way on a turbo 4 stroke. I think it can be done, and I agree Laird MacDougall is a top contender to do it. I also thing Troy from LLC in Alpine Wy could do this.
One thing is for sure, if somebody can do this it would sure shut a lot of people up. I mean what could you say if the best boondocker in the world rode a 4 stroke turbo?