I hear you about finding time to work. Paul put in 8-10 hours a day, seven days a week, for nine months while redoing Peanut. Luckily, he had retired the year before and hadn't committed to anything much yet.
As for not having a place to work, while fiberglass needs at least 40 degrees F to cure (and believe me, warmer is better!), there are so many other things that can be done. Our trailer has inner luan ply paneling, each piece of which has to be custom-cut. We had to redo all the windows
, the entire outside, the entire floor (we chose marine ply from a boatyard; it's beautiful stuff) wiring, galley, interior structural walls, rebuild the storage areas under the back seating area, beds, mattresses, redo the rock shield, and remove it from the frame, the frame checked out, patched, welded, painted...Paul had plenty to do. We kept a heater going in the trailer and Paul dressed for the job.
He used a giant tarp we'd had for a while and never used--too big. we got it on sale one time and tucked it away. Paul dug it out and made a tent using some padding and lumber across the top of Peanut for holding it up. We tethered it to some metal patio gliders we had to hold it down all around, also to the house, the fence, and to sandbags.
Eventually one windy spring day, we heard a huge POP and found the wind had ripped the tarp loose; Paul refolded the edge, put in a new grommet, reattached it to a tree, and forged on. Kept the rain off.
A few more pics: note the color of Peanut when we got it. Root Beer Brown with gold flecks--kind of pretty, shiny, but full of fiberglass holes and cracks and in sunlight, HOT.