I'm no expert, but only viewing this question from an electrical point of view.
The connections of the contacts must be of good quality and NOT come apart during sailing, as the receiver won't like the short piece left. It seems, from information I have learned from club members is it doesn't matter if the lead is too long, but it certainly does if it's too short.
Hope this helps, as I go this route with a removeable cabin/Ariel setup.
Cheers...Ken