I've learned something new today. Having grown up in an area with plenty of hills and in an era when 42/24 was the low gear, I had no choice but to climb steeper pitches out of the saddle. Before reading this thread I didn't know that it was difficult for anyone. Now, with lower gearing, I still ride small rollers and maybe the last 50 yards of a longer climb out of the saddle to give my butt a rest. On my fixed gear I ride pretty much all the hills out of the saddle.

Another height/weight data point: I'm 6'1" and my weight fluctuates between 155# and 165#.

Brent