I haven't used the vortex much becouse I haven't discovered the vortex spawn for so long... and was too buisy with pimping of cars...
(the spawn is really idiotic if you know what I mean, got to be fixed with a patch). When I was viewing SA through some modding tools to get Ideas for gamemodes I discovered that the vortex is actually is an airplane... but with total different controlls (dûh). After some joyriding/flying I started to take some insane stunts, and that was cool becouse I allmost flew away. yes, really. It's hard to controll but the vortex can fly. alltough this is harder than the dodo from gta3 so I call it floating...
So now I got a new gamemode which isn't that hard to code and great fun. It's like in kirby's airride for the ones who know. The fly challenge.
Ok I'll explain: All start with a vortex on mt. chiliad. And players have to float as far as possible while going down (or up, yeah I'm still trying to get it done).