Just been thinking this through and had a few questions to pose:
Do you prefer spools or actual reels for the above and why?
I have been using a reel (Dive Rite) but wondered if a spool is easier in this application.
If using a reel do you use a clip on the end of the line for easy attachment & removal or a cave style line stop. I have the latter on mine and it can be a bit of a faff and an entanglement possibility when passing the whole reel through the loop. I was thinking I could just use a double ender and have the option depending on the tie off.
Bit off the wall idea but has anyone considered using sisal or other natural line on their reel, like the N American divers used to do when creating a temporary upline.
This would mean each leg of the dive could result in a cut and tie off, making for a quicker return transit, but safe in the knowledge that it would decay and rot.
I have found 6mm as smallest on a brief search so amount of line carried would be less than on a regular reel, and swelling could create an issue so a big drum would be better.