I'm looking to get a hitch for my otter xt650 cottage, and I called fish usa and they said they don't carry them. My question is, what otter hitch or any other for that matter, do I need for this particular size tub? Also, I plan to use my wifes snowmobile this year if we get ice on Erie, and it is not particularly suited for this but it has the bar across the back. I need a receiver that will bolt onto this and I have no idea what I need. Its a 2001 polaris super sport.