very informativei found a video the other day on saddle fitting, the horses back, pressure points etc and was absoloutly intrigued!
And this is why the width of the gullet is sooo important.... It amazes me why saddles are measured by their width and not their angle. The "width" should describe the gullet channel. It explains why high withered horses so often have saddles that are too "narrow" (as actually their shape usually requires a "wider" fit but it is assumed that to clear the wither and the illusion of "narrowness" that a high wither creates they should be fitted with a saddle that 9/10 is actually too narrow!). Conversely no/low withered horses are often fitted with a saddle that is too "wide" as often people believe that too much clearance of the wither is a bad thing - often what they require is a narrower angle and a wider gullet.
For example my TB is now an XW (and still growing) but most saddlers want her fitted in a med-narrow because there isn't much too her and she has a high wither....
IMO a horse should be measured for a saddle with its wither removed from the judgement until after the "width" (tree angle) has been decided.
oooh was it online? if so, could you post the link? or by video do you mean proper old school type?