Whether you have the bitter end of your anchor rode tied to the boat or knot (that’s a joke!), an indication that “the end of the rode” is near (I’m just full of puns!) may prove helpful.
What I have always done aboard all my boats is tie a series of figure of eight knots at intervals from the end of the line. Place one knot at say, 15 feet from the end; place the next at five feet, and place the last knot at the very bitter end. The knots do provide extra grip, but more than that, they provide both a visual and tactile indicator that you are reaching the end of the rode. At night, or in other cases, this is an advantage over tapes and other colored markings.