Wellman cabin dates are now open for reservations.  You can reserve a week of exclusive use for $200, prime time days for $30/day per bed, or non-prime time days for $20/day per bed.  There are 6 beds available, all lower bunks.  Prime time dates are May 14-June 17, and Sept 10-Oct 14.  You'll find lots of information about the cabin and on-line booking here after logging on.