I have followed Jig's advice and I have made a concept for the 'hoverbike' idea I had, for a vehicle. Took about an hour only for 3 views, Front, Side, and Top, and there are a lot of eraser marks everywhere. But it gives a basic idea of what I had in mind.
When you first see it, you would swear it looks like a snowmobile. There are two mounted miniguns on the belly of it, which kinda look like skis. Your feet go on rear ends of the miniguns, and the accelerater and the brake are found on the rear of the minigun. Might as well show you instead of talk about it. The images will be up tomorrow.
The idea to keep this thing equal is that it hovers, not rolls. Therefore aliens can duck for cover and the bike will easily pass over them. Also, the bike will not be able to strafe, and will take skill to control (think of how the old Atari game, Asteroids is played; this is how it will move). When secondary fire is used while on the bike, the turbo thruster on the back will propel you up, giving you a slightly faster, upward momentum. This is good for scaling walls. It also helps while going down a hill and then heading up another. Applying the turbo thruster right before you start scaling up the second hill will cause you to maintain your momentum and even speed it up. Those who are familiar with the Tribes 2 hoverbike will be most familiar with the physics applied to the bike. And most will agree its most useful as a scouting bike, not really an assault vehicle.
Again, this vehicle is just an idea. The images will be out tomorrow, I hope.