Thanks, Don. I didn't see your post until now.
I'm pretty sure that a Spindrift would be an excellent boat and likely faster under sail than a Mirror. Alan has corresponded with me with observations comparing the rig and hulls of the boats. I've found an inexpensive Mirror dinghy available in the US. I'll likely try that boat out before I commit to building a small boat.
What has emerged in my searches has been a confirmed commitment to a smaller, lighter boat in the 12-14 foot range. I've spent too many nights anchored when I've lost sleep, and many, many days in remote areas when I was glad I was able to pull boats ashore due to wind and sea conditions. I've come to believe that vessels that can be pulled ashore easily are the sweet spot for traveling in small boats . . . and I'll likely use them more often than my current 19-20 foot trailer sailors.
Dave