What is the towing capacity of a 18/52 fastrak? I am wanting to buy or build a trac vac type vac for my yard. This is the trailer type. I have a lot of pine trees and want to get up the pine straw. Also a few leaves. The yard is about 2 acres. I have an old pull sweeper that I use and it is ok for clippings, but is a pain for straw. Plus it's always engaged, so if I go across the road to dump, the sweepeer is still sweeping. Any Ideas?