Hay Wagon info needed

Thanks,
Mike

1}Keep the bed low (within 4" of the tires at the top. This idea keeps the center of gravety low and reduces the distance for falls.
2} Use U bolts over the stringers (lengthwise structure) on all four corners. The deck will flex enough on terrain suitable for rides (or hauling hay)and security is most important.
3} Use treated wood for all parts. The minor expense is worth the long life and continued good looks. 4 or 3 by 8 for stringers, and 5/4 toung and groove for deck. Put the deck on 1/2" long on both sides then use a clamped on straight edge to guide the saw for cutoff. Round the outer edge with a 3/8 radius router bit to minimize splinters.
4} Screw it together with exposure rated screws. I like the blue TapCon screws designed for concrete. they are tough and can be sized correctly. Predrill the deck to clear the threads and pilot drill the stringers. Screw two inches minimum into the stringers.
5} Band the edges with 2X4 flat and under the decking.
6} It is best to have sides (maybe short) to provide a boundary and a grip (it also keeps some straw in the wagon).
7} Don't paint it. It just looks bad after one season and prevents drying of the wood.
8} Use a cross pinned hitch pin, not a bolt, in the hitch. Use safety chains to the drawbar as well.
9} Have parents sign wavers of liability, no exceptions.

I've built several wagons and pulled hayrides for years in the mid 60s to mid 70s. These Ideas are revamped based on newer thinking, and safety.
I hope they help. JimN