The Blood-Horse Authoritative Guide to Pinhooking for Profit, by Blood-Horse Publications. Pinhooking is the practice of buying a horse, then reselling it for a profit. A high-risk venture, pinhooking can reap major rewards, but it can also backfire when a horse is resold for less than the original purchase price. This guide can provide prospective pinhookers with a plan for making educated purchases, reading the market correctly, and reselling at the right time. Real-life examples included.