In reply to jimnick:
This is going to sound a bit unusual but I find lots of rock climbing moves can be made much easier if you use your buttocks more often.I know it seems rather counter intuitive but i find they can be used very effectively for large pinch holds of flakes or spikes,freeing up your hands in the process.It can turn a tricky crux on a E1 5A into sev 4A if you just use that massive extra tool at our disposal that no one thinks of using.
First you need to do some dynamic workouts though to hone and strengthen your buttock grip before you have the confidence to hang freely using this alone.This involves a super-intense regime of building those seldom used leg adducter muscles as well as your Gluteus maximus.
I use an arse-board which i constructed myself out of miscellaneous things that can fit between the cheeks of my Gluteus maximus,but for a beginner i would recommend everyday things that you may come across whilst jogging in the street or in a park;edge of a bench,fence or railing perhaps or pick a nice hold at arse level at your local climbing wall and practice using that.You may get some funny looks but just tell people your doing specialist arse exercizes and don't strain too hard at first and after a year you'll be shooting up the grades!
That's my wee secret technique out now!
Happy climbing!