That last job I did for Alpine we didn't have to mess with anything 30" or under on the butt because they had a newer dangle-head on the skip landing and then a big, older stroke de-limber on the main landing.
I can't remember what brand that machine was but it would handle a good-sized log. When I worked on Bud Van Norman's side, he had a machine that could handle up to about 26".
We were taking one long log on all the Alpine jobs - they were running a TSY-155 at the time, it could pull a pretty big stick. We would set up a row of high stumps and make a bed for the oversize.
One time I threw down a 70" Fir in the bed and the top broke out and it bounced up and over the high stumps and went all the way to the bottom. I got chewed out pretty good for that one.
It was entertaining to watch though.