Hopefully, here are two pics of two grousers on one of my weasels showing original track pads, with the second photo showing one missing. As I feel the grouser, it appears that four rivests come through on either side of the pad which hold the cleats for the inner track bands. In my proposed band replacement scenario where the rivets are removed and conveyor belting layers are installed using the original cleats with bolts and nuts to replace the rivets, I'm wondering if a road pad solution might incorporate the same rivet holes and running bolts through sunken holes in the new road pads and then through the rivet holes and into the new belting and cleats. No additional holes to drill or alter the original grousers in any way. New road pads may be larger in size to allow for bolt attachment, but would still look similar to original pads. No hockey pucks on the grousers.
And, if they were bolted on and one or two got thrown during use, a easy bolt on replacement could be done in the field. Just something to ponder.
Now, to try to post photos . . .