Rear thwart supports

A few hours of work this morning took care of the support beams for the rear thwart.  They got notched into place the same way as the rear deck supports.  The plans only call for 3, but when I checked the spacing with some some plywood that will be used for the thwart, I felt like there was going to be some noticeable weight deflection, so I added a 4th beam.  The weight penalty is only a few hundered grams.  All told, I figure this extra work added about 3 extra hours but it saved me having to drill holes I didn't want and it will be less likely to fail from people sitting and stepping in these places.  Considering that fixing a failure would require removal of the rear deck, I think it was worth the extra time and effort.