i know these arent lightweight but i love how the keen targhee II's fit, they feel great and i used them all of last year. my only issue is that some of the sole is already starting to come apart from the shoe. i looked up some reviews and saw many similar complaints.

is there any way to stop/slow this problem (other than stop using them for backpacking)?

if not what is a good boot, similar to the targhee II in style but will last a long time?
thanks