Best place to mount my generator?

:) Hi, I have my generator set up to be mounted in the bed of my truck, and run from there.

I added a platform on the tongue above the batteries and propane. The platform itself was 65 lbs and my Champion 3400 generator is a little over 110 lbs. My tongue weight was already about 800 - 850 lbs. The combined total was approaching max tongue weight, and in my case, max trailer weight. Also, it seemed obvious that the generator would be louder up there, and more importantly would attract more attention. I even spent another $150 on theft proofing it, before deciding it would be simpler and less stressful if I left it in the bed of the truck. Expensive lesson for me. YMMV

I do not think I would mount a 100# generator on a TT that was not designed for it. Certainly not on my back bumper, it is far to thin.

We hauled ours in the TT or in the truck bed the few times we needed one. If I used one often, I would buy the lightest unit available and carry it in the truck bed.

Either option has its issues. Can you add 100 pounds to your tongue weight comfortably? Mounting on the rear takes lots of reinforcement and unloads tongue weight.

I'm not in a TT but a class C. I chose to mount on the rear but had a new bumper with dual receivers added.

I suggest you add receivers and build a platform/box.