When you post about a new coin in this altcoin thread section, and you put the title as [ANN] *Your* Coin -For X-ers (writers, bloggers, youtubers, or whatever kind of people you want to get paid)
People will mine your coin JUST FOR FUN. And some people can mine 2 coins or more at once, and you can also add to the thread that you will pay someone a bounty of coins to create a merge mine pool. Which means that anyone who mines your coin, would also mine bitcoin at the same time, which makes it more likely that they would want to do it.
i agree, but now it is difficult time for new coin to get through
That is because new coins don't have purpose right now.
If a company that ALREADY had a community supporting it were to make a coin, and share the link to their coins thread every once in a while on facebook, and email everyone they have on any email list (telling them all that they can EARN instead of mine or buy the coins), the coin would become more popular than most alt coins, just over night.