I moved to a T-head a couple years ago. At risk of stating the obvious, you tie up from only one side, so good secure spring lines are more critical than they may have been in a slip where you can tie up from multiple directions. As for fenders, I've been using three 8"x20" fenders for my 30 footer. If your T-head is located along a busy main channel like mine is, you might consider a few fenders along the traffic side as well.