Like most tasks...
It's always easier to do the job with the right tool than improvise.
Unless you have an easier way of moving large timber around, the peavy/cant is invaluable.
I have a 4 1/2' cant I got from Bailey's, but they are also made in 5' lengths. The Peavy brand seems to be the best of the ones I've used, and seem to hold up the best over time...I've used a couple that had the hook attachment loosen up when they are old.
If you are using it for moving timber around while bucking it, use a Peavy. The cant is better for other log work as it doesn't leave a much marking on the timber (i.e., pointy tip pokes timber), so log craftsmen prefer a cant hook for the timber after they clean it.
The point on the Peavy will help in moving/leveraging just a tad more, so most folks seem to prefer it for any timber that has bark on it. The timber jack is also a good tool and will work for this purpose, but can be ackward if you only want to move something, where the timber jack is great for rolling and lifting at the same time to get the timber off the ground.
Everything you do with a log which requires moving it or positioning it will make one of these tools invaluable. It's like having a Johnson Bar for timber. Those are invaluable for moving heavy objects.