When I was riding the lesson horses with a snaffle bit I would change it if the horse started “cussing me out”. At the end of my snaffle experiences I changed from a JP Dr. Bristol D-ring, to a Wellep single or double jointed plain snaffle, to various of the Fager titanium (mainly) or sweet iron snaffles often with a copper center.
When I switched to using a double bridle with the Fager Victoria Mullen mouth Weymouth curb and a Fager bridoon I periodically tried another Fager titanium Weymouth curb and got told “no thank you”. I stopped experimenting with the curb.
I went through the Fager Madeleine single and double jointed bridoons, usually ending up with better results from the double jointed bridoon. Then I switched to the Fager Alice bridoon, double jointed with a titanium roller in the middle, and the horses have told me that this is the best set up I’ve put into their mouths (several horses). Since then the horses have not “told” me that they are displeased with me so I have not changed in over a year.
If the horses tell me I need to change the bit I will go back to the Fager Bianca double jointed snaffle with a titanium roller in the middle or the Fager Alexander sweet iron/copper center plate snaffle, the snaffle bits the horses have told me are the best with my hands.
With the double bridle I alternate between contact with the bridoon most of the time and contact with just the Weymouth curb as a break from the bridoon. This seems to give the horses’ mouths enough variety of pressures so no one part of the horses’ mouths gets dull to my rein aids or contact.
The last Fager bit I bought was the 125mm Wilma multi-jointed snaffle, like a smoother Waterford. I showed it to my riding teachers, they both agreed that it looked like a really interesting bit, I told them I would like to try it, and nothing happened. The horses are happy with my double bridle and how I use the bits, my riding teachers really like the results I get from their horses with the double bridle, thus my new Wilma snaffle, never used, languishes in my bit box waiting in vain to be used. Someday I will get to try it.
If I did not have light contact I would probably have to change bits around more as the horses’ mouths got dull.
So I change bits when the horses tell me to by cussing me out–flinging their heads, gaping mouths, inverted movement, and supreme reluctance to obey my hand aids. THAT is how the horses tell me it is time to change the darn bit to something that is more comfortable in their mouths with my hands on the other end of the reins.