OP has a point, there were large fluctuations after Christmas in 2013 and 2014. If this year follows the same pattern, profits could be made from high frequency trading. However, I believe bitcoin is different in 2015, the run up to Christmas this year is so different from past years, it would be difficult to guestimate a high and a low. Could get burnt if prices keep going up.

IMO, I would rather spend time with my family and leave bitcoin trading out of it