We rented kayaks from Lakeside Marina in South Lake Tahoe last summer and had a great time. We originally rented two kayaks (1 kayak each) for 2 hours but since there is a restriction on how far you can go from the facility, we ended up using it only for an hour. When we returned the gear, we asked if we could be charged for one hour instead of two since we were done and they gladly refunded us for paid hour.
They also provide free shuttle bus service to the hotels in South Lake Tahoe since they're located only 5 minutes (walk) from the hotels.
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