"blatant ploy" is a correct and usable phrase in written English.
It can be used to describe something that is obvious or deliberate, typically used in a negative or critical context. Example: The company's claims of "all-natural ingredients" were just a blatant ploy to deceive customers into buying their product.
Appearing on CNN, Trump's campaign manager, Kellyanne Conway, blasted the Clinton campaign's invitation of Trump as "a blatant ploy to rig the debate".
Like Casey Affleck, Redmayne keeps glancing down or aside, although in his case you sense a blatant ploy, designed to pull us into Newt's endearing shyness.
We are witnessing a blatant ploy to undercut a core premise of our constitutional democracy — that the people (and party) leaving office have an obligation to transfer their powers peacefully and professionally.
To those who aren't zealots of this particular stash and Facebook has plenty of other choice meme repositories the Stein tweet felt like a blatant ploy to court a young, fringe constituency.
Some are a blatant ploy to meet heroes, as in the scientist who named a species of jellyfish after Frank Zappa (which worked).
Cuomo's executive order is a blatant ploy to prevent any criticism of Israel's policy of occupation and oppression of Palestinians.
He railed at fellow-Democrats in the state legislature for trying to repeal the free transit for senior citizens, one of his most blatant and ingenious political ploys.
FOneow him on Instagram (@instamatticamel
The proposals in Pennsylvania and Virginia sank after groups like People For the American Way got out the word and residents realized the proposals were part of a blatant political ploy.
One reason Dylan's early ragamuffin routine registered as a blatant if seductive ploy even then is that his stint as an unrecognized genius lasted, so far as I can tell, about as long as one of Van Gogh's epileptic fits.
That has competitors crying foul, labeling the move a "blatant" and unfair ploy.
