If down in/near roots, then the SW is the only club possible and you should find the nearest bit of fairway - or even grassy rough - to escape to. If it is sitting up enough, then use a 9-iron. The logic for these is that they both have a decent weight to get through the heather and reasonable loft to get it up and out. Neither a PW nor an 8-iron have sufficient of one or the other to be as useful imo.
Worplesdon is only 'medium to tough' in the penal heather stakes. Hankley Common is more severe and Walton Heath the most severe - like wire! Camberley looked quite bad today too, though there's far less of it about than at Worplesdon (or West Hill).
Of course, the real solution is to avoid it in the first place, but often easier said than done!
Oh I forgot! A 'controlled' 120% swing is what's called for generally! Like a bunker shot from a soggy lie!
