Basically I think all of these are possible. I'd do it myself but I don't have time for this stuff.. I hope you guys will show interest in pwning all of these
Green=Landing
Red=Polebump
1
(http://i247.photobucket.com/albums/gg160/GTASRedX/1.jpg)
2
(http://i247.photobucket.com/albums/gg160/GTASRedX/2.jpg)
3
(http://i247.photobucket.com/albums/gg160/GTASRedX/3.jpg)
6
(http://i247.photobucket.com/albums/gg160/GTASRedX/6.jpg)
7
(http://i247.photobucket.com/albums/gg160/GTASRedX/7.jpg)
8
(http://i247.photobucket.com/albums/gg160/GTASRedX/8.jpg)
9
(http://i247.photobucket.com/albums/gg160/GTASRedX/9.jpg)
10
(http://i247.photobucket.com/albums/gg160/GTASRedX/10.jpg)