I would offer you should consider adding cleat of aluminum angle every so often rather than the bondable.
Nothing huge by any means, you don't want to tear up the belt.
I suggest some 1x1x1/8, and you pop rivet them in with a fneder washer under a regular washer to make the rivet work. You wouldn't need too much to get some serious angle for splits to travel, especially when you take JJ's advice and build centering sideboards and possibly a trough to drop them.
The absolute smallest penetration you can make through the belt fabric will be best. After all, whats a split weigh?