I think it's reasonable to question whether or not the cost of the kit is worthwhile compared with the gain. But it's pretty difficult to argue that there isn't some gain.

In recent years there have been very few production gliders delivered without a nose hook and powerful airbrakes. Essentially, the 2 Schempp-Hirth technotes that cover these items give a Standard Cirrus owner the opportunity to modernise their glider if they choose.

Cheers,
Nick.

On Sunday, October 15, 2017 at 11:19:48 PM UTC+10:30, krasw wrote:
All this anecdotal evidence is pretty useless. We might guess that something might or might not happened if there is nose hook but in the end it is just that. A guess.