There's no way to increase the boost after submitting a post.
So is upvoting from another account is the only way to help get a post in the front page if the initial boost (and organic upvotes) is not sufficient?
Yes. In earlier versions of the site, posts could be boosted after the fact by any user (not just the OP), but no one was using it and it made the tipping UX more complicated.
In the future, I suspect variable boost will be removed in favor of a fixed cost for boost with a guarantee that it'll be seen.
reply