Yes, as above an interesting 10' read.
It DOES irritate me when managers or very few players come and shake hands.
When my son was playing (Before I qualified), I was often CAR and of course in a completely, calm and rational, unbiased way
I sometimes thought that maybe the ref wasn't up to scratch, but always shook his hand - he had turned up after all!
Seriously though, I don't think its unreasonable for all to come to shake hands - it happens at Ryman U18/21 games I do, so really don't see why it can't at park level, but as a general rule If you say there are say 30 who could shake your hand at end of game, its a good week if I get more than half a dozen each week.
Had the odd "Not shaking YOUR hand comment" from a manager, but as for insisting, agree with most above - that's a no no for me.