Not sure about a Sundance but Bed Bath and Beyond have alot of things you can use. On our Bighorn I have put a towel holder on the back of the door to the toilet. The towel holder holds at least 4 big towels we also Velcro it down so it rides well and it has not scratch the door.
I have a 2009 2800RLS Sundance. The only thing I find really annoying is there is no towel rack to hang your towels on after a shower. Has anyone come up with an idea for that? I am not sure where I could put a towel rack, except where the toilet is.
Thanks
Dawn