Hi Linda, welcome to FiberglassRV, we're glad you found us. BTW your Boler
is referred to as a 13 footer... measured from hitch to bumper. There are several different things you can do to increase the sleeping area. If I was looking to change it, I'd look at the mod folks have done that alllows sleeping front to back (instead of side to side) with a platform built (and removable) that goes into the aisle. YMMV
If no one posts a link to this mod, I'll try to find it (there are several) and post back.
Others will probably join in with their thoughts soon.