Originally Posted by Delphinus
I completely disagree; shooting itís a repetitive sport and if one piece changes you wonít be able to produce the same result.
Using one bag with a density or size that depends on organization and can change from match to match itís not recommended, our foot size and flexibility are what dictate the bag size.
Just agree on a maximum
size, for example, 25cm long and a diameter of 20cm and specify how it is to be used i.e. on it's flat, under the ankle. Use your own roll, made from whatever material you wish filled with whatever you wish.
You couldn't have a 'one-for-all' size anyway as it doesn't account for different sized shooters.