Hello. We are the proud new owners of a new to us 2007 Funfinder X210. We are excited to be part of this group. We are preparing to go on a trip and wondering if the bumper on our model is strong enough to hold a bike holder with two mountain bikest? We don't have a manual so have no idea what the manufacturer would say. I have saw bolt on receiver hitches for rear bumpers but had read that many bumpers can't handle much weight. I found a post of someone attaching a hidden hitch directly to the frame which in the future I would like to do. But that is a project for another time. Thank all in advance for any input.