Grayhat/Sneaky ways to boost credit?

Well, like most folks I would prefer my credit score to be higher.

I know about the secured credit card trick. Is there anything else? I only have one negative on my report, but I have little chance of getting it taken off legitimately. But if I could even just get it soft-deleted for 90 days, that would be helpful. Not looking for anything outright illegal.

Why don't you call to temporarily increase your credit score? This is a viable and safe option for your credit score.