Have you checked the owner's manual for the tow limits? If you don't have the manual, a Subaru dealer can run the vin
and tell you. Different model years can have somewhat different tow numbers, I think, but there have been people on here who towed 13'ers with Subarus. Usually you have to keep your hitch weight
under 200 lbs, which shouldn't be too hard. I recall one person who lived in the PNW (lots of mountains) who felt like the towing duty brought on more maintenance bills for her Subie, but that's the only such comment I can recall reading here over the past few years. Subarus are pretty capable.