Fine guys, but I respectfully disagree. Getting your add-on in 27 hours is absolutely do-able. If it takes someone 40-60 hours to do their add-on, then they need to find a new instructor. If you disagree, that's fine. The guys I instructed for their add-on were safe and ready for their check at about hour 20-22. The remaining few hours were generally checkride prep and just meeting the requirement. Your mileage may vary. I'm simply sharing MY experience.