rbrides

I have reviewed a few books and online postings and now seeking input from Bike Forums on finding an optimal standing posture on a road bike. Although I am not racing, I ride mostly on friendly yet competitive group rides while doing frequent mountain routes. I would suspect there are various "optimal" postures for various goals. In the broadest terms, my goal is 3-7 minutes of sustained, standing power while climbing or also while needing to accelerate to catch up (or drop!! Haha) some mates. Or, secondarily, learning to understand pros and cons of various postures for different situations. My question may be too broad. I just want to learn to be more effective and efficient while standing on the bike. I typically fatigue too much after 30-90 seconds. Are there any generally accepted cycling principles for pedaling while standing?