I have a good method for attaching the winch rope to the drum. I just need to get off my a$$ get some pics and do the write-up. I'll try to get to it today.
That's going to be a little late for me. But I would still like to see any solutions.
I have seen the PDF on winchline.com. I also noticed some lines sold with what looks to be about a 2g electrical cable lug "professionally glued and crimped". I liked the compact nature of this method but not the strength. I know that the wraps on the drum are what holds the load and any method that is stronger than the 3 threads of the 1/4x20 bolt on the side of the drum is pointless.
I took a 3/8" ID x 1-1/4" long seemless steel sleeve from Lowes and cut, ground, filed, drilled and hammered it into a replica of a copper electrical lug.
I passed the line thru the tube part and saturated the last 1/2" with JB Weld.
The line was then pulled back leaving about 1/8" proud of the tube (on the bolt hole side).
Now an appropriate sized counter sunk wood screw was screwed into the center of the gluey mess untill tight. Thus any load on the line will actually try to pull the screw head thru the tube and the wedge effect will actually tighten the connection untill the tube bursts.
Once the JB was wiped away and a cosmetic piece of shrink wrap put on, the whole thing looks "professional" and takes up minimum space while allowing for a smooth lay on the drum. I also made a back up for the trail parts box from a link of 1/8" welded steel chain with one end opened up to around 3/8" like some Warns use so I can do a traditional attachment in the field if need be.