I've got two flatbeds, one 34' LoadTrail dual wheel tandem with a deck over the neck and an 8' hydraulic beaver tail which I hardly ever use, and a Keiffer 30' mono-beam like is pictured below, with single wheel tandems, a manual 5' beaver tail, and flip over ramps.
I very much appreciate that MONO-BEAM open neck... You can get up in the bed along side of it without banging your head on an A-frame type of neck... and then that big trailer with that deck-over neck is just a royal pain on top of it.. just like a GN stock trailer with the "box" up over the hitch (I've got an aluminum GN stock trailer too). All you can do then is crawl in under it on your hands and knees... Which is why I so appreciate this mono-beam trailer! I think I've only used that deck-over-neck part like 5 times... and usually, with 34' of main deck space, I can put more load on there than I ought to be hauling anyway. My mono-beam Kieffer is also a "lighter weight rating" trailer too... making it just all around easier to work with, although many of the loads that I end up hauling end up well above the weight rating... which is why I bought that heavier trailer. I much prefer the flip over ramps to the hydraulic beaver tail (just flip and load, simple and fast... and there's alot more maintenance/battery, etc. on that hydraulic system... but it's nice when it's working).
But just about everything that I haul, including 5x6 hay bales, goes on this mono-beam trailer, because of its convenience. Those Kieffer flip over ramps also allow me to place bales right on the beaver tail
when it's in the lowered position, because their ramp supports stick up when they're flipped up onto the beaver tail. I can set two bales SxS right against those ramp supports, and they act as a "backstop", so the bales can't roll off the back end (no need to tie them down at all then). I typically haul 14-5x6 bales on it at a time (10 on the bottom, 4 in a single wide row across the top)... trailer is rated at 14,000#... so every load is overweight. But it just works so much better, and easier than that big heavy 30,000# trailer, and I'm not usually hauling farther than a few miles. You want to make sure you've got good tires on it though, if you're overloading like that.
