since most handswill be folded, are there any decent programable bots to assist with preflop automation?
I'm sure there are, but they are illegal and if the
poker site were to catch you using them (which their software does check) your account would be banned and they could confiscate all funds. Botting is illegal. Scripts to make things easier are legal, but you have to physically do an action, you can't make it make decisions for you and act on them. For example having a script for a pot sized bet is fine, but you must be the one to click it and consciously decide it. Understand?
And about PT (and preferably a HUD such as PAHUD), if you're not using it and you're multitabling you're shooting yourself in both eyes. You are playing blind, and unless you can keep a good eye on everyone at all of your tables and classify them in your mind, you're losing out on a lot of value, much more than the software itself costs.