Exactly, the OP has been given a lot of good advice besides the use of a monopod.
cjc2 wrote:
There is twice the additional light for every additional F-stop. So, if you are starting at F5.6 and you go to F4.0, you double the light, going from F4.0 to F2.8 doubles it again as does going from F2.8 to F2.0. Finally, going from F2.0 to F1.4 doubles it yet again. With all that additional light you can increase your shutter speed and/or lower your ISO, both desirable for what you are trying to accomplish. Best of luck.