Good way to sell tyres..... shop around HD is way far from cheap.

Depends where the puncture is.

I've run a lot of plugs (just the standard dog turd plugs, not the mushroom plugs from the inside), you only really need to worry if the puncture is in/close to the sidewall, or if its a big messy shape that won't plug cleanly.

I personally consider them SAFE (others might not, I don't really care). I ride the absolute fuck out of my R1, wheelies, knee down, quick speeds and it never crosses my mind that the tyre has been plugged. 2 weeks after I fix it I've completely forget about it.

Im not gonna give you advice, just my experiences

If you're stressed, you can always pull the wheel off and get a proper mushroom plug from the inside (pending location of puncture). Or just get a new tyre.

8k on the tyre is 50% or better, go for the new option IMO.

I had a puncture on the rear of my Fatboy, got it plugged as the tyre still had about 6,000 km more wear left in it & I'm Scottish! I checked the pressure every time I went for a ride & my thought was if the pressure had dropped a bit then it was time to replace the tyre. Ended up wearing the tyre out, but never felt at ease so think if it happened again I would just put a new tyre on, like PB said $300 + would be cheap compared to the worst case scenario.

I had a tubed front tyre go flat while rounding a bend. To this very day I have no idea on how I held the bike up. Go with the new tyre option. the $300+ option will be the best because the the road and gravel will not be your friend if you fall. I will never run tubes again

Fixed the rear tubeless tyre on my deuce using one of those emergency plug kits from SCA in order to get to a lunch with Winger. Lasted the rest of the life of the tyre, another 10k or so. I was checking the air pressure regularly.

Riding this wave of success, I used a can of spray sealer on the tubed front tyre after a puncture to get from Clare to Adelaide and up to Mannum the next day for another lunch at which stage the tyre shit itself in a big way. Popped another can in to get to civilisation and the front end looked like a catherine wheel spraying liquid rubber all over me and the bike  MIssus ended up meeting me with the trailer.

I'd Just plug it. I've personally never had an issue with puncture repairs even to the point of one tyre having 3 plugs in it. I've only ever used the licorice style cords pushed in from the outside, never used glue either. I use them on my cars as well.

Fixed a bunch with sticky string, bikes, 4x4's never a problem...but only on screw/nail type punctures away from sidewalls

I've had a few plugged tyres and never had a problem. I never did highway speeds on them though.

If it's anywhere near the side wall replace it, if it's closer to the middle and you can still get a lot of K's out of it, get a mushroom plug fitted from the inside.
Have never heard of one failing and Ive had a few over the years .

Have used the quick repair ones to get me home but wouldn't trust one for the life of the tyre, on a car yes, slightly different outcome on a car if it fails though.

just fit a tube,

did you ride bike to shop and now has puncture?