Ha David 137!
Sorry to get to this post so late, but it's one close to my history! (Heart aint the right word!)
To play in front of strangers in a place where people haven't come to hear/see you is no easy thing. You are already doing something that over 95% of people couldn't do (or don't have the stone ones to do!) and that's 95% of people that have, or wish they had, a talent they could earn money from!
I don't care if you're Eric Clapton in disguise, 150 people is NOT a big enough crowd to get an income from the 5% - 20% that will dip; rain is not a good enough environment to get people to slow down long enough to think about grabbing some money - physically! they're more worried about getting out of it (the rain NOT 4:20!) aside from the fact that it affects peoples' mood thus generosity.
Your ability as a guitar player? Don't take this the wrong way, but busking has little to do with talent and lots to do with stone ones and what you play/how you play it. If you take your financial success as a yardstick to your talent as a musician, then there are an awful lot of musicians who you wouldn't want to stop and listen to who are better than you - I mean by this that they know how to earn good money, but I'm willing to bet you could wipe the floor with them as a musician!!!
The only time to think about giving up busking is if it impedes on your social life; a bad days takings? Par for the course mate!
What I'm trying to say is: Do not feel bad about yourself and your talent ability as a musician and if rain impedes your takings learn some songs/choons that bring the sun out in peoples' hearts!
Keep going mate! You are part of an elite!!! !
<-----<< On an even field, only talent prevails! >>----->
Gans Gwarak da yn dorn yu lel, gwyr lowen an golon!
>>-----> [color=#FF0000]Rudhes[/color] hag [color=yellow]Owres[/color], Kajima <-----<<