I'm joining this thread late but we have the Schaefer In-boom system and I just want to echo Bill T's comments entirely. The system has been completely trouble free, we can reef the customized full batten Quantum sail easily in any weather
AND at any point of sail. The fixed strut keeps the boom at the right angle, and the articulating track preventsany binding. We used it for two years in the trade
winds so it has been well tested.
It is a huge expense and I thought very hard about it but felt the safety
and convenience for a shorthanded crew was worth it. We started out with NO electric winch
but got one later. It is always possible to raise and reef manually...but too much work and the pushbutton ease now makes deciding to sail or deciding to reef an easy choice. Schaeffer management got involved in the install and gave great advice and support to our fine local riggers and loft. The LeisureFurl that Bill has was our other choice but at the time was a few thousand $$ more for our boat. Don't know if that is still true today but we felt after research
that both systems were the best engineered of those available in 2004.