You might have a chance if you could move the antenna outside, free of the signal attenuation and reflection caused by the roof construction. By moving the antenna outside, you also reduce the amount of RF interference received from sources in the home.
If I had the room, I might consider building a rhombic antenna for the L-VHF band... You need gain, but also need to make every effort to minimize reception of noise and interference.
http://forum.tvfool.com/showthread.php?t=2858
http://forum.tvfool.com/showthread.php?t=109
http://forum.tvfool.com/showthread.php?t=2865
FWIW: A power increase of three times expressed in decibels rounds to 4.8 dB. That's not insignificant, but it's not going to dramatically expand WOCK's service area.