I did add another brace that is not showing. Here it is. It goes down to the front of the hitch frame to stop fore and aft movements.
The H Frame behind the cab is a two piece unit that separates at the top of the bed when not used. It J-hooks to tie downs in the bed of the truck and has clip pieces that slide down over the front bed rail.
I bought an used receiver hitch at a junk yard and remade it into the front receiver. Chris
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Box lid slides to either side.
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We have both changed kayaks so I will have to do things stightly different. The bottom Kayak was a Old Town Vapor 12XL and I now have a Vapor 10. Wifes Pelican 10 is gone and she has an Old Town Dirigo 106. So hers will go on the lower level and mine on the upper level.
Chris