I haven't mounted a rear triangle kickstand to a LHT, but I'm sure it's been done as I found several Google images in mere seconds. Most people seem to go with the more conventional chainstay mount, which Surly has opposed in the past, but a few years ago began to offer their own custom LHT/DT kickstand mount, only $15 MSRP from any LBS/eBS.

https://surlybikes.com/images/upload...structions.pdf

https://www.modernbike.com/surly-tru...ickstand-plate