Double 6 on developed Troll

[Sandwich]

Take +ST... if he's just standing around being hit, you may as well make it harder for him to be hit...

Also: he won't get to ST7 without going to ST6 first

And yeah, I realise the original post was 5 months ago.... but meh.

[Jimmy Fantastic]

ST6 without Block is easier to hit than ST5 with Block... just sayin'.

[Chris]

Well, he got block and two matches later was fouled, got -1 str and retired!

[El_Jairo]

I would go Pro, it saves a team reroll, allows him a 50/50 re-roll without using a team re-roll and it can be used
every turn.

That is true only one half of the game: your turns.
During the opponents turns this does nothing for the Troll. As I see their major role is to be a ST5 Guard, SF Road block, Block fits best this role as it keeps the guard up to protect the other players in the line.

So as boring it may sound: block is the most solid pick because it impacts the game more.

The best way to avoid Stupidity? Just don't activate the Troll if you can't afford to have it go stupid.