I think one of the key reasons for slow play is the time spent looking for lost balls and maybe then taking the walk of shame. One recent example was when we arrived at the tee on a par 4 hole where a 3 ball had just started looking for a lost ball in the left rough about 200 yds from the tee. After searching for what seemed like the full 5 minutes, they found the ball and played it, but then all 3 walked across the fairway to the right hand rough and commenced another search for another of the group's balls! They didn't find it and the elderly gent then came back to the tee and played again. He apologised to the groups that were backed up on the tee on the grounds that it was a competition match, but in total it was a near 20 min wait on the tee
Lots of lessons learnt, for sure, such as not playing provisionals, not splitting up to search for both balls concurrently, not waving groups through, but these do not disguise what is basically a rather stupid rule that needs revision. Maybe just for the amateur game.
Ironically the reduction in ball searching time to apply in 2019 from 5 to 3 minutes may increase the walks of shame. It's easy to say 'hit a provisional' and of course this should be done where it is thought the ball would be lost or OOB. However, this is not always practical, especially on courses with lots of blind shots, raised greens with run offs, etc, where often good shots can kick into rough out of site of the golfer playing the shot. Plus autumn leaves, playing into the sun, etc,
Surely it is time for a change to this rule? Such as treating OOB and areas where the ball is lost like a lateral hazard, except that there is a 2 shot penalty rather than 1 for a designated staked lateral hazard. This could be a further option in addition to playing the shot again from it's original spot. For example a golfer hits a drive over a fairway hump and can't find it as it has probably kicked left into the rough. So a ball is dropped where it is thought the ball left the fairway and the golfer is then playing his 4th shot
Andy
England