My husband and I visited CR in February of 2010 and had a great time. We want to go back and hope to plan our trip around the best whitewater. We are white water enthusiasts(more so my husband) so I am looking for input on when the Pacuare is best for experiencing more class IV rapids. We rafted the Pacuare during our last visit with Exploradores Outdoors and our guide mentioned December. Is this the best? What about earlier in the fall? Hoping to not be there the same time as the masses for Thanksgiving/Christmas break. Thanks!