I'm making some cement blocks to moore(sp?) the boat up at a friends cabin. I made one so far it's about 165 pounds and I'll make one more for a total of just over 300 pounds. Should that be good enough? I'm not leaving the boat in the water and taking off for a weeks. It's just for the weekends that I'm there and i'll always be around to make sure the boat doesn't go anywhere. My problem is that it's a really shallow lake so I do need to move the blocks as the water goes down as well. Too much weight and I won't be able to move them. I guess what I'm asking is what is a good safe minimum?
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