I’ve tried the Mountain Skipper - it’s a really cool modification. I found it would crash on spawning in on a hard runway but takes off from a grass runway just fine.
However.
I have had the original Skipper flying in the mountains of Scotland and most of the fun is making that work within the limits imposed by having to fly as much as possible in ground effect.
So what I’d really like to see - well, this is ungrateful of me, isn’t it - is a third version which has the airbrake and the ability to take off and land on grass, but retains the ground effect limitation.