M_Boats: cold temps and GRP

Hello folks, I have to get my boat out of the snow tomorrow so I can do the Havasu thing in Feb, and I wondered if 9 degrees Fahrenheit will cause a problem with the hull flexing on the bunks. I know fiberglas is tougher than most plastics, but I don't know about its flexibility at low temps. Comments from you cold weather trailering types would be appreciated. Thanks, Tom Jenkins 2004 M17 Scintilla