I do agree it can be a pain with four dps and having to run to those stations. I have seen many people get knocked off trying to get to one of the kolto stations. The only thing I can say is what I tried to do to avoid this is go hit the station right after you see someone get knocked back. The knockback won't happen back to back, so you will be safe for a little bit but this does mean you have to stay proactive and keep hitting the stations before some one desperately needs it which will always happen at the worse time.