I was fine putting it back on ~ except for the last few inches which stubbornly refused until they were ironed on .
Perhaps I'm just coming from a position of uncertainty and so, am being a bit too gentle
Possibly Phil, I wouldn't put you down as a weakling though. I learnt in races. When you get a flat, that tyre comes off and on again at light speed. I used to use CO2 carts for instant inflation, don't know it this is still done as I've been out of the game for years.
As the last bit pops on, pushing the bead in moves the tyre away from the rim and allows it to take on more of a 'teardrop' shape. 4 or 5 goes sometimes needed now I think back for some really badly made chinese tyres.
Another related tip mate; when the tyre is seated back on the rim, pump a bit of air in, deflate again and pump. It seats the tube properly.
Bod, those look really good for stubborn beads. I can see some beads being awful and they would work well.