Always keep tools in my boat. You never know where you are going to be and what you are going to need. Leatherman in the glovebox at all times.....can't tell you how many times I have used it. I also carry a spare prop and puller and balance shaft (don't ask - it doesn't take up that much space). One other thing that i always have and I've never seen on another ski boat is a battery booster pack. I use it to jump boats and it also has a cig outlet for air pumps, etc.