There is no way a crankbait other than a lipless would work good on a fixed wire rig. The cranks would all be working against eachother trying to dive. You would have the cranks each pushing down on the back end at a different angle, then the rig itself trying to stay horizontal.. would be one hell of an ugly mess going through the water. Not to mention it would weigh 6oz+ and cause more drag than a bass rod could handle. Would need an XHF musky rod for sure.
on a double rig 2 different cranks would work, 1 would run high and the other low in a more vertical fashion. if the cranks were all the same say 2,3,4,5 kvd 1.0’s, 1.5’s ,2.5’s they should all run true. i wouldn’t run more thsan 2 or 3 cranks and i wouldn’t run anything but shallow cranks but theoretical if all 5 cranks are equal and you got a saltwater rod and reel it should work fine. i don’t expect anyone to do it, i wouldn’t, but it is doable. i don’t have the equipment to throw 5 swimbaits if it was legal.