wrote:
Ok folks, I think I've read in just about every "How to fly
sailplanes" book including those by Piggott and Knauff that you don't
want to add ballast using an "under the deriere´ (never could do
French)" type. If you are going to add ballast make sure it is
attached to the airframe and not held on by your butt! I think this is
in a couple of POH's I've read also.

Our club members who need ballast often use a lead cushion tied/clipped
to the seat belt attachment points. By definition, these are strong
enough to take both weights. The difficulty is the integrity of the
attachments at the cushion end.

GC

Bob (who unfortunately does not have a need for ballast)