No, I have not.......However I somewhat agree. Maybe not divided by 1/2 but I know that if you follow the trolling bible (which is great) and I always use 30 lb Power braid with 30 jets.....I should be on the bottom (24' down) at around 125' back and I'm really around 18-20'. I always am around 1.8-2.1 mph. You just have to play with it a little. Same goes for Dipsy's and the dive curve, I always drop back an additional 5-8' to get the depth.