Go see my BYC Personal Page (link is at left) and look at the pic of the sussexes, you will see the way my droppings boards are basically set up tho I've done various similar-but-different versions.
I scrape the board clean every morning - takes only a few seconds, I push the poo off with a dustpan into a bucket - and presto.
Ha ha ha ! I have another WORD for the boards but I won't mention it here.....I also use the poop boards to compost the poop with other backyard/kitchen stuff....not horse stuff....I put the dirty shavings from the coop in the horse manure pile but i use the chicken poop from the poop boards in my backyard composter....I let it dry a little before putting it in ( during the summer) so the compost bin doesnt get so wet...