Longer ramps will solve the problem, but his ramps are already 6 feet long. Adding another few feet will make them quite diffilcult to handle. Also with the long length, they will probably need to be blocked in the center. Everyone seems to be ignoring what I did for years, which was to just stick a couple of blocks under the end of my 4 foot ramps. The tractor just climbs up on them and lifts itself up.
Yeah, I still havent toyed with this yet. I have had a small project indoors (a 365 Gallon fish tank, new wall around tank, etc.... only flooded the house a few times, wife loves me right now).
Any way yeah longer ramps seems to be the solution. As stated they already are 6' in length. and must weigh 150lbs. Heavy enough they could cause serious injury. They guy that had the equip trailer before me used it to move a forklift. He reinforced the ramps with square tubing, and the ends are 1/4" plate.
Blocks under the ramps aggravated the problem. The first time I tried it (need to experiment with it). They pick the front end up faster and before the rear end makes it to the ramps the back is digging in for a stay with the ground.
I think I just need to build new ramps from scratch. I should post pics of my new 1500 dollar trailer sometime. Not bad for 1500 in my book. Solid steel, unless you count the occasional rust. A bit on the short side at 20'. But it's a good stepping stone.
Just an idea. Can you revamp the mounting area on the backhoe to the tractor to raise it up? Some frames have "U" slots where the backhoe mounts; you could have new "u" brackets made that are taller.
I have a 759c on my NH TC29DA ... and I load it onto my trailer backwards to prevent that very same problem. Also I've noticed it tows better because it seems a little more of the weight is forward of the trailer axles, but this is probably because my tractor is much lighter than yours.