Different clans have different reqs clans like DF, VR, EOS and Forsaken have fair requirements that seem to understand that most of us have jobs, girlfriends and families..
After reading Rot's forums before posting an intro I came across this post by Mattbrazil.
"Make sure you know what you're getting yourself into. This is not like any other clan you have ever applied to. We compete on all stages. F2P, P2P, DMM, CWA, and the Jagex Cup. We expect 100% from everyone, at pretty much all times. That requires a lot of work and a lot of time. If you don't have the time or desire to be pushed that hard, don't bother posting an Intro. We aren't looking for short term members. We aren't looking for members who don't share the same mentality as we do.