Carl,
I've got a set of the Mak-Design trap handles and they work as good as they look. Highly recommend them (the aluminium handles won't bend and break like the similar plastic design). One suggestion though - tie your boat bound trap line to the single half of the ring so that your harness hook attaches to the doubled over portion of the wire. This way you don't break the clear tubing that spaces the handle up with the pressure from your harness.
Regarding your idea of reversing the current hook and ring configuration - It makes me cringe thinking about four hooks swinging wildly around a boat thrashing through waves or during a capsize... I can't get the image of one of those catching my nostrils out of my mind....