I always assumed I was right, but lets see if I am. I usually use the 00 dipsy's which can go to 35' down. Now if I need to go deeper I just sorta do the math from the chart incease the line distance and I assume I'm runnning in the 40' to 45' depth. Does this actually work or do the dipsy's not really dive past the 35' mark. Plan on getting some 01 dipsy's anyway, just wanna know if I've been making mistakes and could've put more eye's in the boat.