Tyson,
I am not trying to knock your logic about May being better, but they have had greens for over a month now including grasses, flowers and skunk cabbage to name a few. Are you sure it was grass in the scat? It could be tree fiber/cambium.

Here are a couple tips and you can take them as you wish.

Stay away from the clear cuts. There are always exceptions, but right now there is not a lot of feed in them.
You need to be in the thick 15-20 year old timber that the bears are feeding on and use a predator call. Try to find an area with 50-100 yards of visibility and call for at least an hour.

Using the above strategy on Sunday the 24th I killed the largest bear I have ever seen during a season.