i have a 1922 aux ketch rigger from the Dunkirk raids, i have leak along the keel. i know that i can get a sawdust box that i can use to put sawdust underneath the boat it will float up, whereever it is leaking the sawdust will get pulled into the leak and fill it, but i cant find one of these sawdust boxes anywhere, can anyone shed some light onto this problem of mine?
many thanks