This is the cheapest and most modular laser line solution we have found through experimentation. The attachment can hold a phone and a laser pointer. Laser pointer can be removed between sessions. Note: It will work very well in most indoor facilities but might not work outdoors depending on surface. Battery life is fairly short.
This laser beam can serve as many different things. It can replace throw down lines (no tripping or friction). It can also project onto a back drop for a “bouncing target”….and whatever else you can think of.
You need: 1 line laser pointer + 1 bicycle attachment + 1 over grip
*Tennis Techie is not affiliated with sellers of these products. These are simply options.
Wrap the laser pointer with an over grip to add size and friction.