GenesGrill, I have a small that I take camping with me. I also built one of the carriers from WessB's site. Seems to work fine, have not had wildlife (nock on wood) problems. I just set the small in the transporter all assembled and set it on the floor of the garage of my toyhauler and away I go. It does not seem to move at all. I am in the process of coating the carrier with polyurathane (sp) to help with the weather aspect as the carrier stays outside while camping. HTH Wayne