Boat trips around Panajachel

Yes, boats are available for rent. They are locally called 'lanchas'. You can go anywhere around the lake with them and it costs about 37$ for a round trip, with a maximum of 10 passangers on board. All you have to do is go to the waterfront and there you'll find what you are looking for. It is also possible to arrange trips with stopovers to San Pedro and Santiago.