Perhaps you missed "while you type" part, as you have to type in your message to communicate and RP without 3rd party software.
The best way I found to avoid these engagement exploiters is to watch the chat window all the time and monitor if any of them enter the system you are in, or are in the system you are about to enter. If yes I will just dock and log, a bit paranoid I know, but at least you are denying them their "fun"
About "type killers" I keep it to be a spineless action, just to wait for the moment when your opponent decides to answer to win a fight.
hmpf,,, perhaps it is time to utilise those preset message slots for some witty and insulting answers hahh!
