I would respectfully point out that if you're running vanilla, you can update to 1.1.3 that came out around a week ago. Multidocking works there (or so I heard). I'm still in 1.1.2 for most of my missions since most of the mods I have installed aren't updated yet. If you have 1.1.2, I would respectfully recommend that you download one simple mod called "EVA struts" that adds one simple part: a modified EAS strut that allows you to place a root for a strut you can setup while on EVA. Super simple, no effect on frame rate, no dependencies, and the piece has the same exact graphical model as the stock one.
Really looking forward to the next chapter as I plan my own massive Dres mission!
We all love Dres!!!