We used to deploy our sixties like that years ago ;in a light role.When the Bns lost their mor platoons we started using the sixties with baseplate and bipod. guys will never fire enough rounds to get accurate trigger firing.A little trick we used was knotted string taped to the muzzle to swag elevation. and I didn't see if that tube had a sight line painted on it .
All through training and my 3 years asan infantry platoon comd, the hand-held 60 was one of the tools in the pl weapons detachment (along with a GPMG and a Carl G). In the 90s we started using the bipod. The theoretical drill was that every man in the pl carried a few rds. In a coy atk the mortars could be consolidated under the coy HQ.
A decision has been made to divest the 60s (along with the .50 MGs). They are both being repl with the AGL...except for reserve inf units who have been stripped of the 60s with no intention of giving them AGLs...