Good advise from Madperry, I have noticed the same things. Low 50 degrees works for me also, along with down speed of lure. I like to see 2.7 to 2.8 along with some bait and you will be surprized how many fish you will catch, even if your not marking any! Don't forget to set some baits up higher, last week we caught kings out of temp. and never marked them! Plus then you may pick up some trout also. Good luck with your hawk!