I've plugged a few motorcycle tires. Most any repair that works on a car tire will work fine on a motorcycle tire. It's not recommended to run on a repaired motorcycle tire because of safety, obviously, but the risk is slim in my opinion. I use the plugs that are brown and sticky, they look like little Slim Jims. Ream the hole, goober the plug up with rubber cement, and shove it in. I've been repairing with these things since the late 70's and never had one fail.
The radial patch should work fine too, but that's a lot of work to pull the tire off the wheel, then try to spread it so you can work in there and see what you are doing. If I was going to the trouble of removing the tire, I think I'd scrape a few bucks together and put on a different tire.
I've even used these things (plugs) when I know I shouldn't have, and they've held:
Once in the sidewall of a plumbing truck. The tire was nearly new and the plumber was too tight, so we plugged the sidewall. He wore the tire out.
I currently have three plugs, side by side, in a 3/4" cut in the middle of a Michelin on my Accord. When I put them in, it was a temporary fix until I could buy a tire, but they're still in there after a couple of years. I know, I know, risky risky.