As always thanks for the info. Been out more this year then ever before and I may be a slow learner. My numbers have not gone up much, but they are up. Will rigger blowback give me a false reading on the hawk? Sometimes I am wondering if it's accurate. I have seen it give me 3.5 on top and 1.5 90 ft down. If my speed looks good and I think everything is correct for what I know then I start to question everything when not catching fish.