Going up the hill you just stand. After a while on a singlespeed (freewheel or fixed) the legs get stronger. On a fixie it's really going down the hill that's the hard part.

Anyways... I cut some braze-ons off a Schwinn World Sport a while back, but kept the hanger. It's by no means a collector bike, so I didn't feel bad about it. Now I want to convert it to a 3-speed internal. I'll either have to find bolt on stops (probably what I'll do), run full housing and zipties, or find a new frame. I learned my lesson and luckily it was cheap. The frame was only $30 and not something history will miss.

If anyone out there is thinking about it, don't, it's a bad idea. It's not a track frame. It will never be a track frame. Suck it up and leave the braze-ons or buy a track frame.