Thats a shocker about Moore, I have had a few of the subtrolls for the past 20 years or so.
I have a 19' boat w 3 riggers, my Sub troll is on the rear corner and never a tangle to date with another rigger. I have had a few bare spots in the coated cable and it still works fine, I think if you can make sure you have a continuous connection for the signal to pass you should work OK, try to limit the amount of bare cable the best you can.