The weight of the tools probably exceed any flotation value of the container unless you have a really big flotation chambers. Back in my younger days I carried everything but the kitchen sink, but after a while, realized that most of that stuff would never get used while on the water !! I also realized how critical preventative maintenence is, and if done regularly, the stuff that I carried became useless. Now, I just carry spare plugs, a piece of fuel hose and a couple clamps, duct tape of course, and some strands of wire. Spare prop, spare prop nut and washer. Some basic pliers, screw drivers, plug socket, spare fuses etc. Most of this I have never needed in the past twenty years. I know....guys like to carry stuff just in case a repair might be needed !! But in reality, it just becomes extra weight, so keep your motor in top condition and forget the extras. My two cents and I am stickin to it !!!