So I made one with a retractable handle that you can use a drill with any quarter inch screwdriver bit to wind the string up faster than hand winding.
I have put on over 300 feet of string on one of these with no problem.
Step 1: Materials List
One quarter inch bolt (3 - 3 ½ in long).
One 5/16 inch threaded insert
One 5/16 inch bolt with the head cut off and nut.
One quarter inch screw bit adapter