User blog comment:WOB Silas/Tank Syndrome/@comment-3213322-20110815224003

I actually have exactly the same problem, coupled with the fact that I so rarely can play real games at all anymore so that my game really starts to suffer if I'm only playing tanks.

So the cure? Well, the best cure is to just be moderately selfish every few games and try to rush in your non-tank of choice before the others can react. You won't get better unless you force some practice. You don't have to instalock, but there are more times than not that at least one other accommodating person will balance the team for you. If the team balance ends up looking pretty bad and nobody looks like they want to budge, you can still quick switch to a tank before the queue time runs out.

Alternatively, transition into offtanks. As long as the team balance looks decent otherwise, it isn't a requirement to have a "full" tank. Double support can situationally negate the need for a tank as well.

Otherwise, I just have designated masteries for a specific AP/AD champ for those rare instances where I don't get cornered into playing tank (and a couple of the approved solomid guides handy to quickly look up if it's been a really long time and I need a refresher). I would recommend picking a pair with relatively easy mechanics (Annie, Miss Fortune, Vayne, Tristana, Malz, Karthus)so you only have to focus on remembering general carry playstyle.