Yoga boards should be relatively stable and have a comfortable deck pad that doubles as a Yoga mat. Inflatable paddle boards work especially well for yoga because they are softer than epoxy boards and easier on the body.
An all round board with a large deck pad can often be the best choice for most paddlers who plan to do casually paddling in addition to yoga on their board. For more specific information on Yoga SUP boards see our Buyers Guide article How to Choose a Paddle Board for SUP Yoga