Oh she's gorgeous Bree - and she would have an amazing foal with Palli!
Did you say exactly how big Jazz is - I'm looking for the difference in height from her to Palli? Many many moons ago I covered a 17hand Percheron mare with a 13 hand 2 inch Highland Stallion!! It was an interesting experience to say the least and caused loads of giggles over the 4 days she was covered - and this is the true story of how we managed it!!
We had a steep downhill slope with a little ledge at the bottom before the flat. 4 of my trainee students took the mare to a point halfway down the hill and planted themselves in front og her leaning back against her chest. Having given them enough time to get organised I followed with the stallion - have to say here that these two horses adored each other, he in particular, had a thing about big buxom women and I often had to take good hold of him out hunting in the winter months when he would be making encouraging glancs at the hunt secretaries coloured buxom mare!
Anyway he and I made our way across the field in a mad round of leaps, bounds and screams (his not mine!) toward the top of the hill. My mare would shoot her head up (could just see the tips of her ears in the distance) and then she would call. That was it, he was off with me racing after him hanging on to the end of the lunge line. My shout of "we're coming" would warn the trainees to brace themselves as my heavyweight but small boy topped the hill flew down and literally launched himself at the mare. He would land almost on top of her, grab over the top of where her hips would have been had she not been so 'buxom', and hang on. Mare, trainees and hanging stallion slithered on down the hill until the mare just dropped off the little ledge at the bottom. This left the stallion with his back feet trailing a bit and therefore he had 'backed off' enough to enter her, which was then helped by me arriving at the crutial moment and bashing straight into his back with my arms round him, just giving him that little lift to send him 'into' the mare, and then holding him up by one leg while he just managed to teeter on the toe of the other!!
After these 'successful' coverings all was quiet and peaceful as we all climbed the hill and returned everyone to their rightful places. Believe it or not they produced a really nice grey filly who grew to about 15 hands, a middleweight cob type who was just the sweetest little lady that I later broke and sold to a really nice family who had her for all of her life. Needless to say, this stallion was normally perfectly well behaved when covering mares of his own size - but then he never 'loved' them like he did my big mare, bless him!!
Just thinking that you might get Palli on top of Jazz!!??? LOL!!