I have four of these units and use them on my lifting poles. I use a snatch block at the top and anchor the winches on a vehicle which I move around as needed. Seriousvol is correct - they are not designed for continous duty however I have found that picking up one end of a log you can raise a log up several feet without them overheating - also, remember the warranty. If they fail, just get them exchanged - you can buy the extended warranty for a few dollars and they give you a cross the counter exchange. I haven't needed to do this as mine have performed flawlessly. You have plenty of time to let them cool between logs - i.e., drilling and rebarring the previous log. I also raised my RPSL's with these and preparing to raise the ridge pole as well. Will let you know how it goes.

I tested the units first by picking up the largest, knurlylest, and longest log I had with only one unit. Nothing broke so figured they should be safe on one end of a log. However, I don't ever get in the position below them that could endanger you if the cable or something broke. I did have one of the cables pull out of the spool when the cable was completely unwound so I recommend you leave a few wraps on the spool.

Vern

hi all its hard to beat old usa made tools. iv gathered old tools for years at yard sales and on e-bay china junktools in my way of thinking dont hold up to much use. stanley tools most of the time are a good choice. just my 2cents later butch