It's a bit early to judge now, but indeed 11 out of 94 confirmations after a week is a bit poor. Some people forget about it after some time, some eventually don't have time for it... but still the ratio between signups and confirmations is really bad.
I am really interested to see the final number of people racing throughout the season, although I think the attendance will decline a lot towards the end of the season, as in every other league these days.