Playing golf during business hours is fine....as long as in your foursome you have invited a client (who you want to get referrals from) and a prospect who you have previously met, who has a need for your services -- is the decision maker, has a budget for your services, but you haven't closed yet.
Let your client, help you close that sale, ON the golf course....the paperwork details will be easy after that.
That is prospecting as well. Call it creative prospecting, but it is prospecting never the less.