Low permeation fittings and low permeation plastic containers using same are constructed by molding an outer component into the wall of a plastic container while it is being formed. The method includes the steps of consecutively sending packets each having, as its originator address, a MAC address other than an originator MAC address of an end host desired to be communicated making up the subnet; thereby stopping the packet loop; and then sending packet data using, as a destination MAC address, a MAC address of a destination end host. The center hull 26 and pontoon columns 38 and 40 have a reduced waterplane area for minimizing motion during operations. The at least one attachment member has a ring attachment portion connected to the mounting ring and a cover attachment portion.