Hi Cowana,You ask what to do with the transom end of the floats.I usually cut them at a slant just to make them look like a modern
stern,and use a bit of the cut off to plug the hole.I don't glue this in but do trim it to look better.!!!?[there is not much you can do to a tube.]There is another transom I used by cutting the end to the same measurement in [4"]BUT instead of starting at the edge of the circle you start just outside the centre hole in the pipe so as to eliminate it,in other words a smaller wedge.Then glue up just like the bows,this should give you a slight taper,with a small oval transom with no hole.Be warned though it will collect water in that hollow centre of the tube,If so just cut an old biro pen up as a tube and shove it through the transom as a drain hole.You seem to cracking on with your multi quite well looking at your photos.Oh yes,if your floats start to part at the front just force contact adhesive into the joint and reclingfilm them this time sticking tape to one side of the joint,then dragging the tape across till the joint can be seen tight shut.leave to cure.I've looked back at my notes and read that a 48" mast would carry afair size sail,and even thought that 54"could be carried,but then as I have mentioned we went onto the flexytop swing rigs of 39" to 42"which give ample drive in all conditions except
downright nasty weather.Hope the info helps.Regards all Scotty