well, we do shoot cripples on occasion, but no worries, they are solid foam.  We do a lot of diver hunting and the decoys can get a workout with cripples, but repairs are easy if necessary, in general, we usually don't fix anything, those little black holes don't hurt anything.  We have a hole in the head of a decoy my son hit when he got his first canvasback, kind of a nice memory.  
Mark, you get over the agony after a while, we will have 50 decoys going at any given time.  I've worked on more than twenty decoys already this morning in various stages of completion.  I've already flocked 8 pintails and mallards, put keels on 3 with 4 more to go later, I'll be carving on 5 or 6 this afternoon and setting eyes on 5 more as well as cleaning up the detail on a few more so they can get into flocking.  I have four birds that I'm designing for a company that I'll get started this afternoon.  
sometimes the steps seem endless, but if I get tired of doing one thing, I can always switch to another.  My shop is cool enough till about 3pm and then I move into the air-conditioned craft room to do some eyes and detail work.  
and no, I never get done with everything I planned for any given day.  i used to agonize over that, but resigned to the fact that I get done what I get done.