Side loading an excavator video. Would you do this?

There is a correct way to side load, when done right it doesn't hurt the trailer. But it requires knowing the equipment.
If it's a mechanical neck, very well!
You need to know the deflection rate, how much does the trailer crush with X amount of weight.
Example:
You're side loading an excavator like the video, but smaller.
The machine you're loading weighs 60,000lbs.
The trailer deflects/crushes 6" with that much weight.
The trailer will have 8" of ground clearance with a load of this weight on it once loaded.
Place 2 - 6" blocks under the outer rail at the point where the center of the tracks will drive into the side of the trailer.
Dump air suspension on both truck and trailer.
As in the video, use the boom to lift the approaching part of the tracks and drive forward until at least 1/3 of the track length is over the side of the trailer.
SLOWLY/GENTLY lower the machine down to the trailer. The trailer will lean, however that side will not take anymore weight than it will when loaded because the "load" transfers directly through the 6" blocks to the ground.
Now slowly center the tracks, and rotate the HOUSE, NOT the carbody/tracks.
Air up the suspension, you should have approx 2" of clearance to remove the 6" blocks that supported the trailer.
If you're concerned that you'll bend the outer flange down on the outside, do as @superhauler stated, and place 12"x12"s lengthwise along the trailer to drive up.
Placing the 12"x12"s lengthwise is how you load a machine without a boom to lift the machine and get the tracks 1/3 of the way across before lowering.
Once again, this requires a smooth operator, but it doesn't hurt the wagon at all.

 

Maybe but not sure why anyone would take the chance I paid 80 000 for my Fontaine mechanical neck showed up at a receiver after a snow and ice storm he said he would just side unload the excavator I told him only if he gave me a certafied check for 80k first I'll spend the 10 min digging the snow out of the neck before I chance bending my outer rail you can block up the rail all you want but something could slip and then your trailers worthless

 

You don't want to get that reversed, i.e., the trailer deflects 8" and you will have 6" of clearance and place 8" blocks under the outer rail. DAMHIK.

However, I do know how to fix the problem.

 

If you look closely, the rail actually rests on the ground during loading. It will only bend so far once it's on the ground!

 

Just swing around gently, lower the bucket to the ground, push down slightly, and raise that side of the trailer a bit, not rocket science.

 

Well I guess if your just a company driver who cares it's some one elts trailer. You can bend the outside rail take the arch out of it bend the flange of the I beam and once your up there you gotta do a 90 degree turn with a track machine chew up the deck boards all that to save 3 min by not removing the neck

 

There are times when one cannot walk off the front.

I own the equipment and the truck, and try to avoid ever side loading, but it can be done without damage to the rails, unless maybe you bought a Witzco.

 

There are times that you can’t load over the front, we build a lot of subdivisions and it’s hard to load a tracked machine over a curb on finished asphalt. We have an 06 Talbert that’s been side loaded on a LOT and it still has camber and the flanges are still straight. It can be done without tearing anything up, I HATE doing it but I don’t have a choice sometimes.