What do you all think is the best for my boat on a trailer? I have a dbl axel trailer that has the rollers off. They might need new ones, not too sure yet as I dont have it home yet. The fellow was going to put a bed on it. Are rollers that hard on the hull? The boat is a 24 Hourston around 5000lbs with the tank full. Also it needs brakes. Surge or electric? Which is cheaper? because it probably doesnt matter what I put on the salt will get them.