Lifts of 8D's are still OK for me, but with all the weird angles you have to use for the average change-out, it's enormous stress on anyone. Trouble is, I don't know anyone else I'd trust to do it. I had my oil cooler pulled out a couple of months ago, and they dropped it in the veranda before stepping to the doc, splattering black oil all over my natural teak deck. I rushed to remove the stain, but eventually had to sand the whole deck to get it out. Nobody is as careful as you are with your own boat.