Jimbo I had the same exact problem and then it hit me. Being a fisherman and frying an awful lot of fish in my day, I applied the method I use for putting fish fry on fillets. I got a really big plastic bag here at work, Id say about a 2-3 gallon bag and put my rub in there. then I put my butt in the bag(Larrys right..sounds weird). Its a little big to shake as you would fish but I found rolling it around in the bag really coated the whole butt really really well and there was NO mess. You can actually tie the thing off when you're through and stick in the frige like that to sit for however long..It works for me!! You do waste a bit of rub doing it this way..theres always a downfall..