On Wednesday, 7 October 2015 17:56:08 UTC+2, wrote:
On Wednesday, October 7, 2015 at 12:26:10 AM UTC-6, Surge wrote:

The only gripe I have with winch launching is that the gliders I have looked at so far are not supposed to be winch launched with water ballast on board which limits the usefulness of the winch on booming days.

Which gliders are those?

With the ASW-19B and ASW-20 winch tows with water ballast are only recommended with more than 10 knots headwind.
I could swear I also saw a no ballast limitation on the Nimbus 2 but now I can't find it so I must be wrong.