It is important that not all aspects of riding have to force the horse to work, the horse also deserves their downtime. Hacking can be a great way for a horse to relax and have fun and enjoy being ridden.
At least once a week i hack my horse either through forestry, fields or along a canal.
When doing this i would encourage the rider to have a long rein and relaxed mind and body to allow the horse to relax as they will pick up on any tension/worry within your body and then they will not relax themselves.
When out a hack please remember that it is important to wear a high vis at all times to be seen and to be polite and respectful to other traffic, people and farmers.