I agree that safety comes first. Real jackstands are what should be used. And not Harbor Break on sale specials. Especially if I am going under there. But- refer to the title of this thread. 'Makeshift' stands, on gravel, on it's way to the junk yard. Not long term storage. I used to use big one foot square timbers but they became harder to manipulate the older I got. I switched to cement blocks because they are cheap and plentiful, easier to maneuver, easy to store. I use several together with a plank on top to distribute the load. I do the same thing when I have to bottom paint the Whaler. So far no issues. In this pic I had to take the Saginaw trans out and I never felt a bit uncomfortable or unsafe while under there. If you ever pass by a boatyard in the off season, look at the huge boats that weigh tons sitting on a couple of cement blocks.
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