We conditioned all of our hunt horses (all draft crosses) by doing loads of conditioning and hill work. They were ridden 6 days/week and their schedule looked something like this:
Monday - Off
Tuesday - Trot sets (we did like 3-4 loops around a 50 acre HILLY, HILLY field)
Wednesday - hack and hop, the property was like 600 acres with coops and stone walls, so we would do a mini-hunt 
Thursday - Trot sets - gravel road/concrete
Friday - jump school in the ring
Saturday - Gallop (1-2 trot loops, 2-3 gallops)
Sunday - Trot sets
None of my horses were ever lame or had soundness issues. Clean legs, no suspensories. I am a firm believer you need to condition on different surfaces to strengthen ligaments and bones. When hunting, you sometimes canter on the road!! I tried to simulate as many different senerios as possible to get the horses in top shape.
During hunt season, we hunted Saturdays–so we tried to keep that the most strenuous day in regards to their work out. If they hunted Saturday, they got Sunday and Monday off.