Me too. The speeder bike and combat speeders are both excellent combat platforms. In the case of the Bike, steal one for the Rebel team (some stormie will leave one behind, you just wait) and get a two-man crew, the driver being a Medic (for healing) or Support (for repairs of the bike) and the passenger going HWS/Rocket Launcher. Seek out an AT-ST and keep moving so it can't hit you, while your passenger fires rockets until you run low on health and/or hit points. If the walker is without infantry escort, you might just take it down easily, and if you're overpowered, just boost your bike out of there - remember it can jump over low buildings - and stop in some safe area to repair and heal .

As a side note - why can't you use your weapons and equipment while in the passenger seat of a Landspeeder?