Tonal pole height?

I have set up a nine hole course on an island in my neighborhood, In an attempt to keep my cost low to non-existant, I am using thick wooden posts as targets, How short is too short for my post heights?

[Justin NUDGA#15]

If you are trying to get the dimensions right, check out the innova website.
http://www.innovadiscs.com/discatcher/pro.html

51 inches from the ground up, with a target area of 19 inches (from the top) would look about right.

[skinner]

Here is a design I found this past summer:

[Boom Boom Dino]

when we make tonals we use any 4" to 6" stick that goes into the ground 12 to 18 inches. The top of the tonal is 52" and we use a 8" x 30" stove pipe as the strker. If u have a fireplace store nearby, they usally are uninstalling and replacing pipe ...... ask them for their used sections ..... they're usually 6 - 7 - 8" x 30"
just nail them to the posts .... great for a backyard course.. ..... you can hang em from tree limbs too.

[Donny Olow]

Nice !!!