[EricH]

<G66>If three LOGO PIECES form a LOGO, the assigned points from the SCORING PEGS in that row of that SCORING GRID are given as an additional LOGO BONUS, effectively doubling the score of the row.

To me, this says that whatever the score on that row of that grid is gets doubled. For your example, if you have one ubertube somewhere in the LOGO row, you get (1+1+2)*2=8, + auto bonus (2 points), so 10 points for a single ubertube.