With the two lakes I fish here only being about five minutes from the house, I've been wanting to make one of these for a while and finally bought the stock I needed for the frame. I got the basic idea for that from a kids trailer I have for my youngest son-
I used aluminum for the frame, 1/4" ply for the main body, and machined a couple mounting blocks for the wheels.
I made it to where I could swap the wheels between the two. Just a little clip holding them on on both trailers.
I have plenty of space in the main compartment for gear, and could fit a small igloo cooler in there also.
I also made a back compartment for anything I catch. I'm thinking about lining that part of it with some type of foam sheeting.
Pretty much all that remains to be done is trying to decide how I want to paint or finish it.