There are many bots out there that can trade for you without requiring any input from you whatsoever, but to begin with are you going to trust a piece of software to trade on your behalf and that can move your coins without your input? We must remember that hacks happen all the time and you are explicitly giving control of your coins to a piece of software and even if the creator of that bot could have been in the market for years we know that companies and individuals go rogue all the time so that is a risk you will face as long as you use a bot coded by someone else.