Max Alfiero, left and his brother Nick Alfiero both of Standish drill holes for ice fishing on Moose Pond in Bridgton near their friend John Daggett's pop-up ice fishing shack. The pop-up shacks have sprung up - so to speak- on lakes across Maine. They're made of thick, ice-proof, wind-proof polyester, weigh 30 to 70 pounds, cost $150 - $750, retain heat from a portable heater and are very portable. Staff photo by Shawn Patrick Ouellette