Well this is the year I start paying closer attention to all the trim adjustments my Islander 28 offers. I have been enjoying this boat just sailing it with the rig trimmed vertical. After reading quite a bit about the subtleties of adjusting sail trim I am anxious to play. One thing that bothers me is what happens to the hull when I increase the tension on the fore stay by tightening the back stay. I already notice a sticking head door when I have things tight. I have hank on head sails. Should I lessen the head stay tension in anticipation of making back stay adjustments? How do I have a slackened head stay and put some bend in the mast when I am tuning the rig? Do I slacken things while on the mooring and set the tension when heading out? I have never made any adjustments to the rig during the season once I was satisfied it was "safe". I have never raced the boat but would like to.