I've been working on my boat and trailer all week. I have been enjoying upgrading and optimizing things on my trailer setup. I thought I would show a few things that I've come up with and maybe others can chime in with some of their mods as well.
All boxes are mounted on treated wood that is bolted to the frame with carriage bolts. I did that so that when I get down to florida, and have mast-up storage (God willing), I will be able to easily unscrew the coffin box and store it on the ground under my boat on the beach. I admit, having the tube and the coffin box is probably too much storage but it will give me more storage for moving to florida and then when I get down there I'll just unscrew it and keep it on the beach.
The black box is very helpful for storing life jackets, harnesses, blocks, extra parts, etc. It helps to keep things organized.
This is mostly for traveling. It will help keep my mpg down versus having the bike on the yakima rack on the roof. I ordered the bike fork mount on the internet for $20 shipped and then just used velcro straps to keep the spare tire down. It fits perfectly in the "groove" made by the mast crutch which should help keep it from moving.
I also have my kayak stored under the boat on the trailer for transporting it but I don't have any pictures.