I run all cannon mag 10s on my boat. My back riggers at about 2 foot boom, side riggers at about 3 foot boom. I too had MANY problems with my cables crossing, especially in the wicked currents off Braddocks Point.
After a few trips, I finally figured out that my back riggers must run deeper then the sides. My rigger with the probe- always being the deepest. Becuase of the blowback from the depth and the probe, my other back rigger is between 7-10 feet above it. When I catch a fish on one of the deep riggers, I clear and re-set the adjacent side rigger. I have not had my cables cross or any other problem since- including lure tangles. I can run my side riggers within 5-10 feet in depth to my back riggers without an issue to get all the lures in the strike zone
Some guys will argue that it might be "overkill" but it literally takes less then 1 minute and you would be surprised how many times you will pull a rod to find some seaweed or garbage on the hook. I would rather take the extra minute to re-set that troll for an hour with a chunk of garbage on my hook.