Looks like a lot of views but no replies on this one....so I'll let you know what I did.
Yes, the rivets on the back side are a little tough, but my guess is that you've already riveted many, many that are harder.
I did not back rivet. When driving from the front, I used a straight set https://www.yardstore.com/riveting/r...straight-3-1-2
. I also used this on the rudder stops. This type of set can be scary, but it's hard to make a mistake as the canopy handle is thick enough not to dent. It's probably possible to put some hammer tracks in it if you're not square, but it's a pretty easy task.
On the back side, I used a 1/2" x 1/2" steel rod. It doesn't take much to form the shop head as the straight set puts a significant amount of force on a very small area. It was pretty much a non-event.
Note: I did have help. I had a buddy drive and I bucked...or the other way around, don't remember exactly.