Replaced the front tire on my Tri-Glide when I picked up a screw in Utah. Patched a rear tire when I ran over a nail in Montana. In both cases I used a plug to get me to a dealer (for the front) and a tire store to fix the rear.
Do not think the recommendations for repair you see at the tire sites has anything to do with tire but how many are on a motorcycle and what could happen if repair fails. I would go to their site and do what they say. It's a safety issue. By the time a dealer gets thru with a repair, it is probably going to cost 2/3 of a new tire if a Harley dealer did it. (least around here it would)