I tow my 200 265kms almost every weekend from October to April (just over 130kms each way). So what’s that, roughly 7,000kms a season? Have been doing so for 4 seasons with this boat. I usually tow with the boat’s fuel tank close to empty. Check the stuff Bulldog mentioned and if you’re loading the boat up with lots of gear, heavy stuff in front of the axles.
Towing that distance or more regularly is the norm in Vic, Aus.