I only hunt silver quarters,, you can do a bag in about 15-20 minutes. Average 1/bag here at best. Have never found more than 2. Have found a few 30s and 40s era keepers though. Several proof finds.
That being said, I have up on them unless no other bags or for sale or if I have bunches of free time.
Go for it though if you have time and good place to dump