David, where did you get that little sprayer? That would be handy.KD
http://hhspray.com/product-category/spray-guns/We attached the spray wand/shield to a solo battery powered backpack. We added wheels we robbed off a 32 gallon trash can. Used a piece of 3/8" threaded rod and some small clamps to attach the wheels to the shield. I think it worked really well, but the results haven't shown up yet.