Quote Originally Posted by wilbur View Post
I think its like 2/3 of the line out is the depth. So with15ft. of line you will be at 10 ft.
You're right Wilber, as long as your line is going down and back at a 45 degree angle, the weight itself will be at a depth of 2/3 of the amount of line let out. With a Bandit 300, I'd figure one more ft of depth for the crankbait. Look at the "right triangle".

Name: image-1325323422.jpg Views: 1340 Size: 28.2 KB
As long as your line is going down at 45 degrees, this formula works. As you speed up or have more line out to drag in the water, your angle decreases. Then you would need to use more weight for the formula to work.