From an email I sent to a friend last year, who was considering a trailer project. There are more trailer projects out there.
The cheapest new trailer available for kayaks is just under $1000:
The cheapest new ANY trailers are probably these, from Harbor Freight. Kayakers have been known to modify them for their purposes. While there is an even cheaper one with 8 inch wheels, the 12 inch are preferred for highway use:
Here's one version of the modified trailer. In the text, the estimate of materials cost is too low, both because of prices over time, and the typical need to buy steel (for the tongue extension) in 20 ft. lengths:
Hardshell Kayak Sail Rigs
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