I assumed you were dropping the rig over the side of the boat, ala grouper/snapper fishing.
If so, it shouldn't tangle.
For casting a two hook rig when beach fishing, I use a different system.
Main trace line should be at least 50lb breaking strain mono.
Tie hook to mono link (I would usually use a 1/0 to 3/0 hook and 20lb mono) and attach to small swivel.
On the main line place a small metal crimp, then a rubber bead and then your swivel(with hook and trace attached), then a rubber bead and another metal crimp.
The metal crimps do not need to be squeezed down too hard.
Repeat for the second rig.
I use a clip at either end of the main trace line, to attach it to the reel line and the weight.
Although I am concerned about "strangulation knots", I have never had the main line break at the crimp.
