I've had great success with Uncommon USA for my flag poles and attachment points. I have one (25') at the stick & brick that is in the ground and I have one (20') for the camper that I use the receiver hitch on the back of the camper to mount my pole. When I had a tag-a-long, I used a 4" bumper attachment to mount the pole to their bracket. Can't remember is I got the bumper attachment from Uncommon USA or from Camping World. I did buy the pole bracket from Uncommon USA. Now with the Landmark 365, I just attach the bracket directly to the receiver hitch. When I'm going to be someplace for more than a couple of days I also use the Uncommon USA deck mount to stake into the ground for a little more stability.