Not sure if this is an innovation, but my take on adding a downrigger to a crate. I already had a downrigger from my fishing boat (which is used less and less). I didn't want a permanent installation until I see how much I actually use it. I had some leftover cutting boards which bolted on either side of the crate with mounting base on the outside. I was lucky enough to find a crate with a metal ring around the top, so it pretty strong.
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Next I needed a way to lock the crate down. I used some U-bolts and pvc and have go into the rod holders behind the seat. They are angled in and do a nice job keeping it down. The one end is not glued shut so I can take it off when I want to.
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I really enjoy seeing all the different ideas on this forum. Thanks.