I have a 18' Pro Team Tracker alum. with 1 set of 10' bunks under it came from the factory like this ,am thinking of adding another set under it in the middle, would they need to be as long or could they be shorter? 6' Or would this put extra pressure on the hull where they stop. The reason for adding the bunks at the back end is the boat has 75 hp motor 2 batteries and a 23 gal gas tank. Thanks
