I wound up learning a lot about flat repair on the road. I tried the little mushroom plug thing. However, I never ended up with a hole that the mushroom fit well. I even carried a couple sizes of mushrooms. In a couple of instances I'd plug it and a mile or more later, plugging again-with the rope. Finding and fixing holes in tubes definitely sucks. But a tube into a tubeless tire is a quick way to get you home in a pinch.
Now, my funny story. We did 36 one year and one of my buddies convinced me to take the cases off of my K12GT as it'd be "funner"...until I flatted less than half way back and realized my mistake-I'd left the plug kit in one of the cases. Between us, we had 6 CO2 cartridges and one really shitty plug. Got the tire plugged and I road the rest of the way back on a tire that was half flat. Now, I have a small box attached to the case holders of my Adventure that I keep the plug kit in on trips-I won't make that mistake again :)