One wishes to leave slack in one's outdoor cables in case we
reposition things one day, or a typhoon.

We hear it is a big no-no to concentrate this slack all into a loop
several turns thick, creating an inductance (except for the one loop
right below one's 2-meter GP antenna.)

OK, we will distribute this slack evenly along the 80 meter run of
RG-213, nice if a tree gets blown over on it.

But too much slack looks goofy snaking along the nylon support cord.
How much slack is right? And in what formation shall we distribute it?