Don't fund with credit cards unless you absolutely have to. The interest rates on those are often too high for any legitimate business to make enough to sustain payments once the "teaser" rate is gone.
Funding with personal debt should not be considered 'bootstrapping', if only because it's so damn stupid, and should not have a positively-connoted word associated with it.
It's more like buying ownership in your own company with money you don't have.
Would you borrow money to buy stock in someone else's company?
Would you borrow thousands of dollars to gamble in a game that has about a 1/10 chance of winning?