I am getting ready to canvas and fill a 16' 1958 Old Town Otca and wanted to use a latex lagging compound for the filler. I have to work in an attached garage and cannot have the lingering smell of a traditional oil based filler around for the weeks it takes to cure (I may not smell it, but the wife will and .....). Are there any sources in the U.S. for a filler similar to the Bakor or Rollins I have been reading about? Or should I find a source in Canada willing to ship it? (ouch) I have also read about using something called Mastic - is that the same as a lagging compound or different? Will any Mastic work, or is there a specific kind/brand that works best? I am a newbie to canvas canoes and appreciate all the help and expertise on the forums. I have searched the forums several different ways trying to find an answer before starting a new thread and could not find the answers. Thanks in advance for all the help.