The left overs are the way to go if you want to hunt this year, Call G&F and they will give you the Name and phone # of the local Warden or biologist in the areas you are looking at.They will normaly be happy to help you.
If your looking at next year you can put in for the regular drawing and put in for one of the harder areas to draw as a 1st choice ,then put in for an area that has leftovers as 2nd choice and know that you should draw,