Ah so that'll be Mr Garside, Mr Micklewright and your goodself then!
I think a key thing for your size boat, particularly for singlehanded work is using springs and warps to help you come alongside and leave a mooring in different types of conditions. (e.g. wind onto the pontoon, wind off, bow mooring, stern mooring etc.)
Trying the auxillary outboard has also got to be a must although I would tend to agree with you that its not going to do a lot on a boat of cyanides size! But at least trying to get it out of the engine box, mount it (fnarr fnarr) and get it going without a) putting your back out b) dropping it over the side or c) dropping yourself over the side might be instructional to say the least!
Trying a sea anchor is also a good idea and might surprise you. I found the sea anchor I had on Yellow Tang and Blue Ice was not nearly big enough for the job. The bow tends to weathercock down wind (especially on the Scorpion) and the only way to get it to work was to raise the outboard so the stern had less grip on the water. Not an option for you I think. Lying with you bow to the sea really makes life more comfortable. Beam on to a sea stationary is sea sick territory as I think I have comprehensively proved in the past!
The real thing with the sea anchor is slowing your rate of drift - maybe to give you time to rig that aux outboard!!
Towing good thing to practice too with the associated ropework - e.g. making up a bridle, deploying it, hitching onto the right tow point etc.
Finally what about a bit of SAR. Get one boat to go to an approx area, give position and then drift. Try and calculate which way the boat will go (current / wind) and use search patterns to look for. If you want to be really smart try it with a substitute manoverboard e.g. large fender.
Sounds like a fun couple of days!