I hate the obsession golfers have with distance markers-I believe judgement is an important part of the game.
But alas I am in the minority.
Therefore I prefer VISIBLE 150 markers that one can eyeball a yardage or pace off AS THEY WALK BY only.
I frankly think sprinklerheads SLOW the game down as players search for one from all over.
Sorry,but caddies slow the game even more as every shot becomes a powerpoint presentation on what the actual yardage is,what it's playing,and what club to use.Many players won't start this process until their caddy has returned from whatever other duties he has.
I am even OK with 100,150,200 elevated plates which are VISIBLE as long as golfers would take a quick glance for a reference and make an educated guess.
That said,carts with GPS do seem to speed play,particularly when you've driven it off the map and need some reference.This is especially true on courses with NONVISIBLE yardage markers.
So these hand held devices,used properly,may well speed up play,particularly for wild hitters.
That said,we won't be using or promoting these devices at my course this year.-cause I hate the idea.