Bike Rack on Mantis?

Has anyone found a good way to carry bikes on a Mantis? I'm looking at road trips up to a month but only biking occasionally, so it'd be nice to avoid constant loading and unloading. With the rails, a roof rack is an option, but it would require climbing up and down so often to pop the roof, and it seems to defeat the purpose of having a low profile trailer. I would love to have a 2" hitch installed so I could use my current bike rack, but I don't know if it's feasible/safe. I know having a back heavy trailer is a no no, but I'd only be carrying two mountain bikes – would the added weight be negligible on a Mantis? Is there even a way to install an aftermarket hitch on the Mantis?

Any experience/tips would be appreciated.