Depends on the boat. If it is a 2k boat with a 25 hp motor not a big deal. I even took a mechanic with me as it was an 8 hour drive one way. They had the issues camouflaged. Tested the motor compression and all was good. Knew the trailer was in need of repair. Ran the boat on the muffs but as stated above it isn't the same as on the water. Spent all of last year chasing down what they had tried to fix. Went to the lake more last year than ever before and was on the water less than three hours. I have learned how to work on a 200 mercury xri now and no I am not interviewing for a mechanic job. I should have spent another $3000 and might have gotten a better deal.