Mosher's "Radical Brewing" has a recipe called Ignoble Doble Doble or something like that which calls for sparging with pre-boil wort. Never tried it though.
On the forum guide it says to sparge with the heated sparge liquor does it mean hot water it also says after recirculating the initial turbid wort im confused can some one explain in english please Im guessing everyone uses water but what if you have collected your 25 litres or whatever and you dont get the desired reading on the hydrometer