Join Date: Feb 2012
Location: Alberta, Canada
Most people have no idea about a horses mouth shape. A horse with a low pallet will typically despise a single jointed bit, because they poke the roof of their mouths. That horse will likely do much better in a French link or even mullen mouth.
A horse with a higher pallet and a thick tongue(my arab) will hate a strait mullen mouth or French link, and do fine in a single jointed bit.
A horse with a thick tongue AND a low pallet(my BO's draft cross) will likely prefer a ported solid mouth piece, that gives some tongue room without poking into the roof of his mouth.
I usually try a French link when in doubt. its my first choice because I like how the bit functions, and a large percentage of horses work well in them. Around here you can get several variations, which is nice. I find some horses like the taste of sweet iron or copper(especially those with dry mouths), while others prefer stainless.