You need to target a certain segment of blacks, middle class black families, that’s the vote the GOP needs to go after, the inner-city population, you can pretty much forget.
The problem is that much of the black middle class works for the government. That is why black support for Democrats is pretty solid across all income levels.
Much of the middle-class black vote is un-winnable as well.
Government employees will not vote for a party that wants to cut government. Neither will small business owners who make much of their gross from government contracts. People who think they owe their positions to affirmative action (however much they refuse to admit it, even to themselves) will be unlikely to vote for a party that might reign in the EEOC.
Bottom line, go after net taxpayers (ie, people who pay more in taxes than they receive from government in any form).