I am surprised the suggested only the boots. its usually all that is needed, but a lot of times dealers will try to sell you a complete cop. it also kinda covers their *****, because if they suggest the boot, and it ends up needing a complete COP, then its twice the work, and they only get paid for doin it once. not to mention the truck might actually leave and then come back still having the problem and that just looks bad on the shop and the tech. but since cop's come with new boots, it covers both problems.
if you have the cash, I'd do cop's but if not, just throw some boots on it and see what ya get