It's not about "muscle" peeps

It's "technique"

I'm quite slightly built and only 5' 8" 11 stone and I can get "almost" any bike onto it's centre stand

The majority of modern bike have what are called a "tread down" stands

If I was there I could show you how

Try to "stand" on the extender and let the wieght of the bike roll backwards whilst just "steadying" the bike with 1 hand on the bars and 1 on the grab handle or other convenient holding point

DONT try to "LIFT" the bike (you will only hurt yourself)

Sorry I can't be of more practical help at the moment

I did a few "demonstrations" at the "novice maintenance day" which BM had at Squires a couple of years ago

Maybe it's time for another one