Is an "umbrella rig" legal to use in North Dakota waters?

An umbrella rig focuses on the presentation of the terminal tackle, often providing numerous plastic lures to assist in attracting fish and is typically used for trolling. The basic design is a central point that you tie to your line, with a number of wire droppers. Each dropper typically has a snap that you can attach a lure of your choice, such as a jig and plastic, spinner or crankbait.

North Dakota fishing regulations allow no more than two lures per line, so up to two plastics, etc. can have hooks and would be legal. However, anything more with hooks would be illegal. The plastics without hooks are not considered a lure, and thus are legal. See schematics for a graphical display.