i understand, but i have my main pedalboard that i do 80% of my rig with, and then i have a second pedal board that i'm building. sorta the crazy experimental stuff, and i don't want to put it into the end of my other board, but somewhere in the middle, so i just wanna be able to connect the ends in one certain place, cause I wanna try and use the crazy board with some bass stuff too. it's not a perfect system but if i find that i'm using it all the time, then i'll find a different way to do it. I'll post pictures when i'm done.
Sounds like in the end, you actually need an A/B/Y switch. Gives you multiple options for your set-up. Or possibly a 1 or 2 looper switch. I would rather incorporate a switching system rather than trust a coupler on my signal. Your options are greater in this kind of set-up than the coupler alternative.
Talk to Dan @ this1smyne.com and let him know your situation. He could easily build you a switching pedal or looper for your needs at a very reasonable price. He's built quite a few things for my pedalboard.