I just use a 600 MXZ Renegade with a reinforced rear bumper to tow my otter sled, wider skis and longer paddles on my track for residential trapping. Lots of on and off the trailer at this time of year. Doubles as a recreation ride.
If you need a work horse you might find something decent on kijiji if you don’t want to buy new.
https://www.kijiji.ca/v-snowmobile/e...ationFlag=true