Here's what I do, not right for everyone, but an option:
I use a 14,000 Lb Gross weight dump trailer (10K payload). It's only 14' long so with a blade on the back of the tractor my loader sticks out the front a little. The trailer has a ledge that it sits on just fine though. I give up a little room on the trailer but get the ability to haul and dump 5 tons of dirt,gravel, or whatever. There are 16 footers out there too.
When I set out to do a job somewhere I load an extra implement into the back of the truck with the forks (depending on the implements I can fit two), hook one up to the 3 pt and pick up the loader bucket with the forks and it rides there. What I end up with when I get there is everything I need to get some work done.
In the pic I was heading out to do a gravel driveway. The blade is on the tractor, the rake is on the truck, and the loader bucket is straped to the forks. When I got there I unloaded the tractor, set the bucket down got the rake off of the truck then switched from the forks to the bucket until I was ready to leave. I can run out and get loads of stone or move dirt instead of the trailer just takin up space for the rest of the job.
Another benefit of this is how much free material you can get. You go way to the top of the list for free fill dirt, wood chips, or whatever when they don't have to do a thing but let you take it. You bring the tractor, load the trailer as many trips as you want then load up the tractor and leave when you're done. No hassle for them.
You do loose some hauling size compared to a transport only trailer so it isn't right for everyone but is another option to consider. Of course if you go goose neck you can get 20' plus....
Oh ya, you'll find lots of "new freinds" to