i'm gonna be going camping next week and we'll be doing some hiking and such...but also this summer we're planning a backpacking trip through the Smokey's and i might be taking the dog with me...i was thinking about getting one of those saddle bags for him and i was wondering if anyone here has used them before and what kind do you suggest...my dog is a lab he's almost 2 and he's not a big lab but he's extremely muscular so he could carry a fair amount of weight