I'm still a ways from installing the seat back for my Chesapeake 17 but I am wondering how much space needs to be left in front of the aft bulkhead for instllation of the hangers for the Rapid Pulse backrest (the ones that screw into the bottom of the deck/cockpit combing)? Are there any tricks to installation? Does the hardware for suspending the seat need to be directly above the loops in the seat back or can they be set further outboard? I ask this because if the can be mounted further towards the sides of the kayak, less room is needed between the aft edge of the cockpit and the aft bulkhead. Thanks in advance.