That board sounds huge for your weight. No wonder you have trouble throwing it around.
Camber/rocker hybrids are the way to go IMHO
I ride a 158 NS evo and it has a ton of float (I weigh about 170lbs) and it's not specifically a pow deck at all.
Don't discount any of the other brands, it often looks horribly like a Neversummer cult around here at times
Sure others will chime in