Non-Compete for an unpaid Independent Contractor

I direct pageants- I was presented with a contract with a company after 9 months of hosting pageants for them.... I had invested 1,000's of dollars on signage and other items so when I was presented the contract I felt the need to sign it- looking back I shouldn't have - but this is my question. The contract states many things but I'll give a basic over view. #1 I'm considered an Independent Contractor #2 I receive no wages just a bonus per contestants whom enters the national pageant ($20 per person, so not really anything ) #3 within the contract it says I have a non-compete clause for 3 years in any form , any where within the industry #4 I have to pay them $20 for every state contestant I have. #5 in the contract it also states the