Attaching skid to bottom of a hull: Normally people screw the skid to the hull, and when the glue dries they take out the screws and have to patch them. What I do is make a skid that is longer than the hull, apply glue to it and lay in proper place on the hull. then weight each end with buckets filled with stuff. The buckets are kept from falling off the end by a nail or screw partially driven into the skid. Then put small weighted buckets along the length of the skid to hold it down, using more partially driven screws to keep the buckes from sliding off the skid (screws or nails into skid, not into bottom). Uses the force of gravity to compress the skid while waiting for the glue to dry. This is one of the few ideas I discovered by myself, although others may have discovered it before me.