I don't see the big difference to be honest, you take the smallest cars on our roads vs. the biggest bikes and the whole footprint argument starts to lose potency. Whatever vehicle I happen to be in I select the appropriate position, speed and gear based on all the available information to leave me in the safest possible state (and 'me' includes my property). For me at least this does include blocking vehicles in certain circumstances, otherwise in town I would ride more position 1 than 2, after all being further away from oncoming traffic has to be safer?
The problem we have is most people who have been driving for a long time have no idea how to drive on a motorway and have developed bad habits that border on selfish arrogant stunts.
When I say no idea how to drive on a motorway, I mean, who taught you how to drive correctly and merging safely, lane you should drive in, what each lane means, how to tell which lane your in during fog etc. I taught Pass Plus and lots of my colleagues thought, and still do think, it should be mandatory.
We should drive in the left lane unless overtaking and return to that lane. ( Highway Code 5:264 ). But how many do we see straddling lane 2 and 3.
Positing should be centre of lane unless your manoeuvring to overtake and therefor your position would change to make the manoeuvre.
How many put their signals on and leave them on and hope someone lets them out. If that was a 40 ton lorry, I would be freaking out.
MSM is commonly known now, but seldom practiced. Check your mirror, IF it’s safe to pull out or manoeuvre out, then and only then would you signal, then you manoeuvre.
Obstinate driving leads to road rage.
Cyclist, motorbikes are never seen unless we are 10 feet from you..more and more riders are fitting extra lights, brake lights, wearing hi vis, doing all they can to be seen...
In closing, read this from my colleagues page on teaching lane discipline and positioning.