Fishing -- If you want to try your hand at fishing for guapote, call Captain Ron at Arenal Fishing Tours ((tel) 2694-4678; www.arenalfishing.com), or just ask at your hotel. A half-day fishing trip should cost around $275 per boat, and a full day goes for around $375. The boats will usually accommodate up to three people.
Horseback Riding -- Any of the hotels in the area can hook you up with a horseback-riding tour for around $10 to $20 per hour.
Swimming -- You can swim in Lake Arenal, although it can get a bit rough in places, especially during peak windsurfing season. Up above Lake Arenal on the far side of the lake from Tilarán, you’ll find the little heart-shaped Lake Coter. Surrounded by forest, the lake has good, protected swimming. (UFO watchers also claim that this is a popular pit stop for extraterrestrials.) A taxi to Lake Coter costs around C15,000.
Windsurfing & Kiteboarding -- If you want to try windsurfing or kiteboarding, check in with Tico Wind ★ ((tel) 2692-2002; www.ticowind.com), which sets up shop on the shores of the lake each year from December 1 to the end of April. Rates are $92 per day, including lunch; multiday and lesson packages also available. This is also the place to rent stand-up paddle boards and equipment.
Wakeboarding -- Lake Arenal is a big lake with plenty of calm quiet corners to practice wakeboarding. If you’re interested in lessons, or just a reliable pull on a wakeboard or water skis, contact Fly Zone ((tel) 8339-5876; www.flyzone-cr.com). Simple pulls behind its specialized boat run around $135 per hour, including boards, skis, and any other necessary gear.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.