I have one and have yet to get a solid attachment using their gasket and strap. I recently purchased some heavy duty suction cups on Amazon that im pretty sure are going to do the job. I may need 1 or 2 more to get 1 tent pole in the right position. Fender is right where the pole need to sit.
its very hard to get the cord that holds it to the gasket to remain in the gasket. Especially when the dog goes from tent to camper and back. The tent itself is very well made but that connection is not ideal. It's winter now so haven't had the chance to try it out with the suction cups. But I will post back in the spring. My plan is to use the suction cups one on each corner to securely hold the tent wall in place and then attach the cord to the gasket. If the wall cant move the the gasket/ cord should be secure enough.