i wish could go surfing. you're a lucky man speelyei. i have to disagree about the two climbing lines though; sometimes climbing in stereo is the only way to fly. i not saying i do that everyday but cabling a big codom is alot easier that way.
ok fairfield the only way to stop that from happening is to use two different systems on one hitch climber instead of the m you'll find this just as fast if not faster to reeve and more controllable. if you are looking at your hitch climber hole one is the top hole by your hitch, hole 2 is the middle hole, hole three is where you tie in with the crab that attaches the prussic. so move your rope termination from hole 2 to hole 1, then take the tail of you rope and make a closed system with a short tail blakes over a suitable crotch, clove hitch to a crab get out dog snap and micro pulley put on crab, attach crab to hole 2 in hitch climber. i use this to do tension traverses sometimes all you need is a pantin to help tend slack.