Heh, I made my own bot that I use... guess I could be making loads if I rent it out... um, send me your btc, I'll trade it for you and I keep 1% of profits*
Then test out strategies via backtesting to get an idea of what the potential strategy could mean long term, prepare to re-evaluate your strategies every other month.
If you want to try something free and very straight forward/easy to use then check out http://crabby.io , its in very early release stage, windows gui that connect to only poloniex atm. If you are uncertain if it is safe to use, the poloniex api access can only trade with your account and not withdraw or any other dodgy things. I have tested it out first hand and from an ease of use then its definitely worth it but it is very limited compared to gekkobot or zenbot but might be just enough for the average user.