Come come Colin, even a river dweller must realise that loads of floating line in an anchorage is a recipe for disaster, where does all the extra rope go at low water?!
'Cos if you use floating line someone will get it caught round his prop. If you're lucky the line will be cut; if you're unlucky it will pull your anchor up.
Hello Put one end to the anchor, the length of warp adout 1.5 times your average anchoring depth . thread warp through eye on anchor bouy, and put a weight on the other end ,then the loose end will go up and down with the tide or varying depths and the bouy should stay above the anchor to show its position. Cheers bobt
A tripping line is generally not needed and a pain for other water users as highly effective rope cutters make mincmeat of them when folks troll in and out of the anchorage day and night. I even had one joker moor up to my tripping line buoy, he said he though 'tripping Line' was the name of the yacht! A scheme i use if i'm worried about the anchor fouling is to tie an 8mm line(lighter than that and you will not be able to lift the anchor) to the hole through the crown of the anchor and tie it off on the chain at half the scope. Then if you do have a problem pulling the anchor up, there is a tripping line in place that should not restrict other water users. I have never found that it twists. Best of Luck