Steve,
I share your dilemma in motoring my DS1. I have a 1963 Evinrude 4hp, long shaft, 2 cycle, gas motor. It works great - when it works! Actually, it has been fairly reliable but nonetheless has let me down a few times. So I started looking at new gas motors - the cost was the main deterrant, but the noise, smell, and fact that 2 strokes are on their way out, and 4's are even more expensive, were all things to consider.
So, I purchased a Motor Guide 44lb thrust, electric motor from Wal-Mart - on clearance for $100 (+$50 battery) - couldn't pass up the deal! This motor is technically sufficient for a boat of our size/weight. However, the issue that comes up again here relates to WHERE, and under what conditions you are boating. The electric motor worked great on the inland lakes here in Western, PA - it is virtually silent, has plenty of power, instant on, forward and reverse, battery never ran down more than half under hours of usage (on a still day).
HOWEVER, I took the same boat & elec. motor out on the Chesapeake Bay (where I grew up sailing) on a 10-15 knot, 2-3 foot chop day and DID NOT feel very comfortable. I was near shore, motoring from a ramp to a dock about 1/2 a mile away, into a head wind. The motor could not keep up - I was gradually losing "ground" and heading for the shore. Before I got in trouble I hoisted the main in order to gain control.
Now I realize these conditions were probably too much for the electric motor, which is exactly my point.
I will, however, give it another chance next year - but not on the Bay under those conditions! So, after trying/owning both types of motors, I conclude that it ALL depends on where you are sailing and in what situations. The electric definately has its advantages - if used cautiously. I hope this helps you make your decision - I guess all you can do is keep checking the clearence section at Wal-Mart and give an electric a try!
Rob
Rob Bryan (jrobertbryan-at-hotmail.com)