In addition to length and width, you also need to consider the curve of the tree. Some horses need a very flat tree, others a nice banana shaped one, and I wouldn't expect a saddler to make a curved tree fit a flat horse.
If I cross-tie a horse in a trailer I always give him enough free movement to reach either side for hay. I only need to stop him turning around, not to immobilize him completely!
What are you trying to stop him doing OP?
There is something to be said for stallions, and ex-stallions. They tend to poo on top of the last one, so you only have a very few big piles, the largest of which is always quite near the gate.
I don't do it, but it would be very possible to construct a muck pile, and get them to poo directly...
My top tip is, like driving, to be very aware of the moment that the rein is taken up as you ask the horse forward and GIVE WITH YOUR HANDS right away. Otherwise the horse walks into the contact, and you've just trained them to baulk.
Same. In fact, barring complete numpties, most people looking at the real cheapies do know what they're doing, because unless you're an idiot, you assume you're going to have to do some work.
No reason a stallion shouldn't be a suitable child's pony. Shetlands on the other hand should only...