DONT disconnect the lines. when you back into the lake that will let water in the lines. moisture is NOT good in a brake system. It is very common for the actuator on these to go out. I personally wouldn't put myself, my boat, or other people at risk on the highway if i doubted its safety. The trailer as well as the boat may have issues your not aware of if your skipping on your maintenance. Don't mean to preach, but these boats are only bulletproof if you take care of them. The trailer is just plane crap. That's where Toyota saved alot of money.