well there is all kinds of schemes for the sailing rigging, but they are pretty demanding physical labor

if you have a decently reliable motor, enough fuel, and can back it up with a dinghy that can (slowly) tow it the worst case distance to a point you can get it to be repaired... and of course definitely would want to have it thoroughly seen to before a big trip but i don't see why not

could even be a possible scenario where there is already a backup engine that you can switch over to in the boat, since it would presumably be reasonable to have two drivers connected to a belt on your main propellera, and i believe there is boats with dual ... impellers, that's the proper name... likely a boat with dual impellers can be set up with two small individual engines and have a failover coupling that lets you drive both with just one for the case of failure

anyway, stuff i'm gonna look into, but i'm sure i don't have to sail only to do this, or, better, there might be a nice, simple, small sail setup that is easiest for noobs and works well enough, just maybe not very fast, i don't mind if i take 50% longer than having to spend so much more time and energy learning and using a more sophisticated, and probably expensive rig