good question , ive never heard of it called a multi rig untill i seen it on page 187 of the total carp magazine [september issue 2008] . i only knew it as the john mc allister rig or mike kavannah rig. it consits of a hook [usually one with an eye that bends away upwards from the shaft of the hook, coated material ie kryston/korda hybrid 20lb/25lb. a tiny 2mm or 3mm rig ring.NO KNOTLESS KNOT , the coated material is tied on after you make a overhand knot which the loop is then threaded through the eye of the hook then the rig ring is added then the loop is then put over the point of the hook , onto the rig rig would be dental floss /pop up of your choice. a little of the coated stuff could be stripped away to make a hinge and near this hinge is added a split shot at your chosen depth. job done. ... it was ali hamidi that called it the multi rig [in the magazine].