Really like the idea of using the plastic decking. no need to worry about the wood rotting.
Agreed. If I was building this for someone else, it wouldn't have normally been cost-effective. But I was building it for me personally. After owning numerous different trailers over a 20+ year span, I was tired of "trailer maintenance".
Sometines, I may not use my trailer but one or two times in a year, so I don't want to screw with it for half a day to make lights work, etc. I built the frame out of 2x4 rectangle tube, used LED lights and recessed them, with all wiring internal, hand-painted with implement epoxy, ramps incorporated as retention side-panels, rear and side loading/unloading for two and four-wheeled machines. I bought this to suit my needs, but not so specific that it's not diverse for whatever I may need to haul, that I haven't yet owned. I was tired of buying trailers and modifying them for my needs.
For the decking, I didn't want to paint it...
ever. I didn't want it rusting, or splitting, or cracking, or getting dry-rotted. So the composite decking was the answer. I scanned all the big-box stores for months waiting to catch a clerance deal. I initially wanted the decking in red, but this stuff was just too good a deal to pass up.
Finally the local Home Depot was clearancing this color/maunfacturer, at a huge discount, but they only had it in 10' lengths. Most people building a deck need it in at least 12' lengths. Because of the beaver-tail, I was cutting it down anyways, I just had to do a little more math to get the tail pieces cut out of a couple individual boards. I paid less than $200 for all of the decking!
Bought 5/16 stainless steel carriage bolts at Menard's for $10, for a bag of 50 pcs... very affordable, and I'll NEVER have to worry about them rusting. All toatal, with aluminum wheels (from a 2wd Ford Ranger), the radial tires, the aluminum tool box, the lights, wiring, jack, steel, deck, axle, and aeverything else, I have less than $1500 in this trailer. I could have built it for less, but it's damn-near maintenance free, and plenty heavy enough to last, way after I'm fertilizer. Short of ths one being stolen, I will NEVER have to buy another utility/motorcycle/atv/lawnmower/etc trailer again, as long as I live.