This smells like black hat
Come to think of it, do a redirect from the black sites to the good sites and kick the competitor out of the rankings.
No, there are no penalties, as long as your site is penalized within six months (approximately). The point is that the punishment can only lower the site in the ranking and throw it out of consideration, but these penalties will apply only to a site that is ranked (namely, ranked, and not in consideration as a cache on the request site:xxx)
The only thing that may subsequently be with your site is leveling link weight, which goes through a redirect.
There is another nuance, if you move from black hat again to a site where you continue to do the same black hat - do not hesitate, you will be fined.
I recommend that depending on what you do, put a tape on the site that will show google only what we need, but it will not work for all methods.
