check out https://steembottracker.com. It has most of the big upvote bots listed and how much potential earnings when you buy an upvote. When I have a decent amount of SBD, around 50 SBD, I go and watch for a good time to buy upvotes. Takes time and practice to learn when is the best time to buy an upvote and from which bots.

I got lazy lately and just use minnowbooster now because upvotes are 24/7. Drawback though is not every amount you pay will get me an upvote. Just find a consistent amount to spend on minnowbooster for upvotes. Basically most of my SP came from upvote bots but it all started with a little SBD I earn from posts and snowball.

I am not born a writer and actually I hate writing. I like steemit so much I have non-stopped writing everyday now. Still do not like it but love steemit. LOL weird.