Try also, getting all the Fryer grease you can. I get mine from all the local stores w/deli counters. Pour that all over and around your bait site. What this will do is get on the paws of the bears and go back into the thicks with them. Other bear will come along and and pick the scent up, and go right to the bait.
Get rid of the fish! Get some Anis oil, not the alcohol based stuff, but the actual Anis Oil. Mix 1 part AO with 3 part pure Bacon Grease. Soak rags that do not smell of laundry soap and hang(tie) in branches all around the site to give you 360 wind driven scent attractant.
Get the Dunkin Doughnuts too! Throw out any Onion or garlic bagles. They don't like them at all. If you cant get doughnuts, get your self some Charger Horse feed in 80lb bags and mix it up with 1/2 Store molasses and 1/2 feed grade molasses. The plain feed grade is to bitter and they will not touch it. Mix up about a 5 gallon bucket of food per night. Add just enough Molasses to make it stick together like thick oatmeal.
Treat the bear right too! If there are other baiters in the area, they will go to the best spot first, I promise you that. Have watched it happen many a times. Give em treats like a butter dish full of honey or cheap maple syrup. I would mix up both and add bacon grease and smear on the barrel and tree. They'll rip that tree a new ARSSSS!!!! not to mention lick the paint off the barrel.
Back to the grease a minute... Once they start hitting the bait site. take 10-15 gallons of the grease and pour it in one spot by the bait. Look, they'll dig a hole half way to China trying to get it all. They also wallow like a pig in it. It's really funny to watch.
Bears are creatures of opportunity! Treat them well, and your opportunity will be much greater for a nice Boar!
Good luck and post some Pics!
Pete