Originally Posted by BondJmsBond998
I am not at home right now to confirm, but it looks like Heritage trailers fastened the guide on base to the trailer using U bolts. It is a very sturdy piece of metal and the guide-on padded covers are slipped over a round vertical piece and they "roll" as the boat makes contact with them. Looks like a good design to me. I can attach photos later if you would like.
I don't want to take your thread off topic. I just happen to be looking for loading guides but I have diamond plate steps all the way to the rear of my trailer so u-bolts won't work, at least without drilling or notching something out.