Okay, I'm new to this. my brother has about 9 service Vans in his company. Do I just climb up on top and start working? Do you lay down a towel or anything? This goes for tall vehicles of any type. It is the one thing that I've always wondered. I'm not the most mobile guy due to my back injury, but I think I could limp through it when I have too. Do you use ladders? :wha :newbie