Already taken care of, all three sessions will be timed from kick off until last shot then averaged out.
Thought i had replied a couple of days ago regarding 1 lane 1 target.
It would add close on 2 mins every other lane.
Could be worth exploring 1 lane 3 or 4 targets but not divisible by 50.
3 targets should save around 30secs per lane.
Not that many grounds could cater for three or more targets to a lane and to fit in may well do away with decent shots.