Assuming you are refering to the stabilizers - You don't need an impact wrench. I use my battery powered drill to do this. You might have to adjust the tourque, or give it a twist manually to get going, but the impact is overkill.
Why did you give up on the electric drill? Mine is a Craftsman.
Any 18 volt battery Drill will do the job in a whole lot less time! Batt drill gives you greater service in that you don't have to drag out a cord to go around your whole trailer. In some cases, you won't elec. to plug into in your are just on the road and want to stay overnight at a Casino for example but you want to stablize the rear end even if you don't unhook.
