The aft deck
on the Solaris 42 was the result of the boats center cockpit
design - something which has fallen out of favour on most current
designs. While it does provide for an additional lounging space (and some additional protection for the cockpit
in following seas), it also lengthens the bridgedeck - and this increases pounding, especially on a boat like the 42 which has low bridgedeck clearance.
The Solaris Sunrise 36 has a similar set-up, as to a lesser extent does the Sunstream 40 (a small aft deck, really more of a walkway, but also a shorter bridgedeck). I wouldn't worry about aft lounging space on a cat - afterally, you have a huge lounging area forward on most cats that is perfect under anchor
, or even underway in appropriate conditions,