Tips on the roll pin.
use 2 punches.
1/4" for driving it through.
bigger than 1/4" to get it started. We usually opt for a long 1/2" impact extension.
3lb mini sledge.
Use the big punch and the mini sledge to get it started. once the pin moves initially it's pretty easy to make it move more.
Once the end of the pin is flush with the surrounding surface then switch to the 1/4" punch.
For reinstall we put the pin in the "cup" end of a long 3/8" extension. This holds it nicely so you can at least get it started. once you have it started then flip the extension around and use it to drive it in the rest of the way.
Granted you ding up some extensions this way, but everyone seems to have spares of those sitting around.