Yes .... surface to bait
The "angle" of your rods only dictates how much "added length" of line you have to consider. All the line length above the water just has to be added to the length of line you have below the water, in your overall length of line that's let out. How much line that is will be determined by the angle of the rod vs the added weight &/or diving range of the crankbait.
Most crankers I know are using 2-3oz of weight @ 5' in front of the crankbait (ie: on a 5' leader of mono of a lesser pound test than the main line). Takes less line out to reach the depths you want, but a hung-up crank will usually have to be sacrificed ... because you can't stop your forward motion without taking the chance of hanging more or ALL of them. Our "normal" trolling speed is @ 1.8mph
... cp