Predicting jumping form

[NaturalSelection]

I’m considering a jumper bred WB weanling. The stallion is a very successful GP jumper with great jumping form. The dam is less well-bred, did not have a performance career. The breeder has a free jump video of the dam and she exhibits reproducibly terrible jumping form -forearm significantly below the horizontal several times through a well spaced jump chute with small set up jump, one stride to bigger jump.
The breeder has video of two half-brothers out of two different mares that each competed to 1.40m…those yearlings have an outstanding jump style.

The weanling’s conformation functionally looks like he should have nice jump form…but so does the dam (and she clearly doesn’t). I’m shopping for a jumper/eventer, jump style doesn’t have to be perfect, but I’d like something that keeps forearm above the horizontal. How to evaluate?

[JB]

Can you post a confo-type pic of both the foal and the dam? Is the video online and public?

Personally I wouldn’t consider the foal to be truly “jumper bred” given the dam side. Jumping form is pretty heritable.

[iJump]

I’ve had one that was out of a performance career mare, by a GP stallion… horrible jump form, and surprisingly built really well for the job.

I have a young horse right now out of a very mediocre mare, by a stallion that has primarily done soft 1.40/45’s… amazing jump, super scopey and correct. Built pretty decently.

My foals have all seemed pretty consistent over fences to as how they would jump over poles and boxes on the ground when out playing in the arena with mom. Does the breeder have any video footage like this?