It's a great scheme, they just suck at it lol. You're one of the worst players I have ever seen but whatever, each to their own lol.
When TUS was TUT, we hosted Tournaments, and the vast majority of the CF clan loved it.
It's pretty much like roper, but with jetpack, it does require a lot of skill with grenades.
Though, it's a scheme that requires a specific map design, and the crates can be lame, those 2 things kind of ruined the scheme.
Edit - Oh, and I'll admit, most of the maps even I made, actually suck... There were 2 of the maps in the entire pack I made which are good, the rest are too basic and easy.