I'm going to be setting up my bait sites in the near future, here is my delima. The area I plan to bait is about 7-8 hrs away, my work schedule is such that I can only fill my barrels every 12 days or so. I've got 1-55 gallon drum for each site. How big should I make the holes to make the bait last, but still keep them around. I'm going to chain the barrels to a tree but give them just enough slack so the bears can roll them some to get the goodies out (dry dog food and fryer oil). Originally I was thinking of one hole in the lid about 5" in diameter after futher deliberation my thoughts are to make about 3 -4 holes in the sides of each about 2" in diameter. Is this too big? Not big enough? Too many holes? Not enough holes?