This might be what you need? Posted by: siriushf on Dec-06-12 4:32 AM (EST)
Swedish manufacturer Vitudden Kajakvarv (VKV) have a simple product that adresses your problem. However it’s made to fit their kayaks and might not fit your.
This is a really nice video that could serve as inspiration for your own solution.
OT: Here is an article about VKV and its long history
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