Speaking as someone who has just recently been in this same position, I have to say, I agree with the experts.
I qualified for my level 2 in December 2009, have spent the last ten months working voluntary and doing family and friends because I could not find a paying position that didn't want experience, and am now training in my NVQ level 3.
I was lucky that during my level 2 I had a salon I went to one day a week, 9-5 for £10, so I did have that little knowledge of salon life.
I like you, am quite confident in my hairdressing ability, but it HAS taken me this eleven months to think, actually I AM a good hairdresser ... for a newbie anyway
... but no way was I ready to go mobile on proper clients that would expect a high standard when I was fresh from my level 2.
Out of my level 2 class, only 4 of us are now still hairdressing ... because the rest of them were time wasters who just wanted the EMA and ALG ... but they still qualified!! I have even swapped to a different college now, with a better standard than my last, for my level 3 .. because I want to be the best that I can be.
All I can say is just keep looking for that break into a salon, it'll come eventually .. the salon I volunteered with ended up hiring me when I said I would have to leave for college .. so it is possible to find a position.
If you really have your heart set on going mobile though, then I wish you the best of luck and hope it goes well for you. I am considering becoming mobile one day a week at the minute too, so please get in touch and tell me what your experience is like.