Just had a quick look at Marco's return for season 2006-06. Haven't double checked but his league goals appear to have accounted for 15 points (i.e. if he hadn't scored in certain matches we'd have been 15 points worse off). Not that we'd have qualified anyway but on top of that we wouldn't have got past Stranraer in the play offs.
Further Albion Rovers would've knocked us out the Scottish Cup. Instead his 6 Cup goals in ties & replays (plus his penalty in the shoot out v ICT) were largely instrumental in us getting much needed income from the game at Tynecastle.
I've always said Mark Roberts saved us that season. Had we not gone up things looking bleak would've been an understatement. The incremental income thru the Scottish Cup, something I'd forgotten about, must have also been very significant.