IMHO, I got advice about trades people, from people who got burned by
part-time electricians/plumbers/tax advisors/etc:

1. If they are so good at it, whey don't they do it full time?

2. If they don't behave like professional business people, (license,
insurance, documentation) how 'professional' is the work.

Just thinking out loud....

tom @ www.Consolidated-Loans.info

lots of excellent tradespeople do side jobs for cash, avoiding lots of
tax and child support issues.

provided they do good work at low prices it proibably doesnt matter
except for the moral issues