Grazing muzzles

[c-bx]

Hi all

does anyone have any tips to keep a grazing muzzle on a pony? I have a very fat Dartmoor pony who continually takes her off. She has worked out if she rolls she can rub her face on her leg and slip it over her ears!!
Thanks in advance!!

 

[White Horse2]

Plait the forelock around the headpiece

 

[scats]

Flexible filly.