If you have already gotten your traps, this may not be helpful, but I love my square hard mesh ones. Consistently good producers (except for last Saturday) always out fishing any round mesh ones I have used. I have 18" and 24" square ones build to commercial standards. Just got 4 new ones from Bauer Sea Traps at AquaTackle in Sidney, I run them in a set with the 24 first overboard with the 18 about 50 - 60 ft behind it. The 24" trap has no weight, the 18 has about 3lbs of lead in the bait tunnel, For the rope between the two traps, I have 50 - 60 ft of poly attached to the bottom trap, it is stored in the trap and when setting the traps, is connected to the main line with a 1/4" stainless quicklink. Then I snap on the second weighted trap with a heavy duty snap. 400' of rope up to 2 floats. First float is a football shaped one to have less drag on the traps in the chop and the second (about 3' away) is round. If the traps are set to deep and float, the first ball may go under, but the second ball rides high and dry to make finding it easier. I find the weight in the second trap good enough to hold them in all but the most severe conditions and yet not too hard to pull. All four shots of rope (mixed 5/16 poly and leaded, 400 ft each) fit in a standard rubbermaid tote bin. Fits right under the puller when retrieving or setting. Just coil or pile the line in keeping the end of the line on top, never any problems with tangles. All my ropes have eyes spliced into the ends for easy connection of snaps and quicklinks. Floats and traps are connected with big stainless snaps so they can be separated. The 1/4" stainless quick links eliminate knots, are easy to undo and run through puller with no problems.
I know this style trap takes up more room in the boat, but that's only a problem till they are in the water, then they shine.
Hope this helps.