He's otherwise ready to be backed. He lunges in tack and long lines in a halter (usually just a wide nylon or leather one which he respects well) and is great about voice commands, responding to pressure, and I have done loads of groundwork with him.
My experience with starting young horses has always been to have them bitted and working well in lines with the bit before backing.
My question is whether I should wait to bit him before progressing with his training, or would something like a sidepull be a good investment/ idea for him. I have limited experience with any sort of bitless bridle and wonder what kind of work I might do with him in one, or for the most part should I treat it the same as if he were bitted?
Any input is greatly appreciated