We started out using the scissor jacks every camp out. Just under the rear crossbar, near where our door is located. Kept the rv from rocking going in and out at least. But we soon got used to the motion and since we stow the scissor jacks in the rear compartment, we got tired of wrangling them in and out. So now we seldom use them unless we are parked for several days which has been seldom. A pair of them are about $60 or so. The drill attachment is maybe $8. We use an 18 volt cordless drill in the RV and have a charger for the RV.