If you're an avid golfer, play a round or two at Suzuran Park Golf Course. Dress in your finest khakis and get out onto the green.
You're spoiled for sightseeing choice when in Hakodate. Suzuran Park Golf Course is a great place to start here, but there are plenty of other worthwhile sights to visit. Yunokawa Hot Spring, Fort Goryokaku, and Ekini Fish Market are near the golfing destination and and will cap off your day nicely.