Yeah, I'm still learning the technique on bunny hops I'm getting there. I'm getting higher lately. Not sure how much. Need someone to take a video.
I wonder if your MTB is lighter? If you have like a high quality build it might be..... Or just the bigger frame gives you more leverage? I don't know. But it's impressive that you can bunny hop on your MTB.
I wracked my knee one night trying to manual and wheelie, so I hear ya. I plan to get some knee pads before I do that too much. I can't do it on my cruiser so.....
I'm trying to fakie but I don't have a good spot to hit something in my driveway. And the park close to my house doesn't have the traditional concrete curb stoppers in the parking lot..... I need to go somewhere else.
But yeah, my only tricks I really wanto to learn are bunny hops and manuals. And then go from there. I want to do barspins. But like you I don't really plan on doing anything extreme. I think just learning those will take long enough to keep me interested. LOL.