You don't need the special tools. Push the driveshaft collar back by twisting, wiggling and pushing with both hands or vise grips with guards so you don't chew up the collar. You may have to carefully pry backwards with a bar but once they start moving they usually go backwards pretty well. Once back, remove the c-clip. Remove pump, pull backwards on driveshaft with medium force while someone taps on the rear oil seal with a brass punch. It will come right out. If you have a rusty driveshaft from saltwater, pushing the collar back is more difficult and some say they have to be cut off. I've never had to cut one off but rarely see saltwater skis. My favorite tool that is helpful is the one sold on ebay for pushing the collar back. The other seadoo tools I never use.