Thanks for all of the replies so far guys.
I am trying to figure out what is the smallest size I can get away with and still have it be comfortable in the hand.
I plan on using it off of a boat on Lake Michigan and from a float in some of our inland lakes.
I had set one up a few years ago on one of the wrecks that we dive all the time.
I put in colored zip ties every 5 feet and zip-tied in colored, plastic, weight keepers every ten feet.
Every 20 feet I zip-tied in the plastic housings from the UK miniQ40 lights- those things break just by looking at them!
I wrote the depth on the side of the plastic light housings to mark their depth.
After a couple of months we need to use the mooring line on another wreck and I had to take it apart.
Now I am looking for something smaller to use with an innertube float- with cover.
I have seen plastic tape that is used to weave into anchor rope to measure distance. usually it is only numbered ever 25', but I might try and make my own.
So, does a sinking rope about 1/2" thick sound like the size to go with?
How much weight are you hanging at the bottom of your line? In the past mine was tied to a wreck and I didn't have to worry about that.
Fred, I like the idea about the down weight system for variable
Jon