A few months ago I had a trailer built for me by Holt Trailer in Asher, OK (ships widely). It was a custom variant of their "Heavy Duty Car Hauler". It is HD tandem axles with 16 inch wheels with load range "E" tires and 4 wheel electric brakes. It is rated for 12,000 lbs gross wt. I got tread (diamond) plate max width deck with stake pockets but no side rails (flat bed), two 5ft ramps that stow athwart the rear (under). I got one floating "D" ring on centerline at front in case I need to use come along, winch, or??? The fenders are treadplate and there are small treadplate steps at the end of the fenders. As the shop ran out of 6 inch "C" channel to build my tongue and frame forward of axles, so they substituted 7 inch (tremendously strong). There is a pipe rail across the front. The tongue is extended a foot over standard to allow room for the FEL bucket to go over the pipe rail and rest on the tongue and not hit the pickup in the tightest turn possible.
It has a bulldog hitch, breakaway switch for the brakes, and a non-folding 7,000 lb tongue jack (don't like to baby tongue jacks).
Some folks prefer longer ramps, these are as heavy as I want to wrestle. the deck is 18 ft long and will take my
L4610 with FEL and 6ft brush hog. The spare carrier is mounted on the right side (away from traffic) at the right front corner (not in the way too much).
I got stake pockets around the periphery vice "D" rings because I can use the stake pockets just fine for a "D" ring substitute but "D" rings don't work for stake pockets. I can build custom sideboards in just about any material and configuration. I can make a serviceable stock trailer (with planks on the open design ramps). I can use 4x8 ply to make 4 ft sideboards on wooden stakes or even a 8 ft high fully enclosed trailer with 8 ft high doors at rear from a few sheets of ply, some 2x2's in the corners and some drywall screws for easy assembly/dissassembly and still reuse the ply later. (Been there done that).
Not everyone "needs" 12000 lb capacity or 18 ft length all the time but I have more versatility than a "Transformer Toy" and except for one minor fact I would not probably ever need another trailer. A couple weeks ago when only a few months old, it was taken from behind my shop where it was not in view of passers by on the highway. Further I used a tongue lock all the time, but once. I used the trailer to haul my dune buggy to the shop for the tranny swap and on my return got sidetracked (OK a "senior moment" if you will) and did not put the lock on the tongue. It was gone within 24 hours. A fan of Sherlock Holmes, I don't believe in coincidence very strongly but have no proof just ideas and suspicions.
What will I do different with next trailer? Spare tire carrier will go forward on tongue to give more clear zone for easier loading of stuff from side with forklift. Prev trailer did not have "Dovetail" as I was concerned with off road clearance with 18 ft bed but with no dovetail and fairly short ramps loading a very short wheel base tractor made me feel like I was going vertical. Longer ramps as heavy duty as I want would be too heavy so going much longer is not an option so... I will opt for about 1/2 the dovetail drop that is usually used (I think, the jury is still out) maintaining fairly good off road clearance and reducing the pucker factor loading short wheel base tractor (as a tractor neophyte maybe I just scared way too easy, I'll check some before turning in my order.
Will try to be religious with tongue lock!!! Will probably loop a multi conductor multistrand wire through the tongue area and run it to the shop bld. One of the conductors will be an extension from my alarm system so if the cable is ripped in two as the trailer is moved the alarm will sound and I will be alerted by an air horn and the monitored alarm pannel will summon the law. The bad guys probably aren't electrical engineers but even if they are they have to guess which wire in the bundle to jumper. Jumping one of the wrong wires (red herrings) will also sound the alarm. cutting everything will sound the alarm. Picking the right wire out of 20 or more is a 5% chance or less but you have to know something the average thief doesn't to get those good odds. This will cost me about $20 and make me feel better. I already have some motion detecting security lights to install above new trailer to make thieves uncomfortable. Given that the trailer is absolutely unique, I will probably be on the look out for it for the rest of my life.
Hope someone can learn from my trailer experience, good and bad.
Patrick