I figured I was going to get this question, so let me explain with more words than necessary to justify this decision. The Barients work fine so I am not replacing them for function. I primarily race single handed and find that by the end of a breezy race, I run out of arm power to get the last few inches of genoa trim. At 72, I just don't have the stamina I used to have, and want to keep racing as long as my body allows. The genoa has been the limiting factor. I can do better with my 110 genoa, which I raced with exclusively for a season, but that is still a problem when it blows and limiting in light to moderate winds. I hoped the PHRF rating boost would compensate, but it doesn't. So I have been thinking about electric primaries for some time. I bought an eWincher several years ago, hoping it would solve the problem without complexity and have explored using it as an assist for the genoa, but it really doesn't work very well for the genoa for racing. I love it for halyards, and I will continue to find uses for it. The cost of electric winches has kept me from seriously considering the switch, but I also worried about the complexity of adding another battery to drive the winches so I didn't tax my house battery. I also seriously considered a "new" boat to prolong my racing (self-tacking headsail), but I love my 34+ and have it set up so it works for me for racing and for my wife and I for cruising. Then I read about eWincher's new Sailforce electric winches. I loved the concept and design and after good experience with the eWincher decided to make the plunge, rather than sell my boat and start over with a newish one. They use a single high voltage Lithium battery to drive the winches and it is essentially trickle charged from the house battery. Their calculations are the load on the battery is not a problem. The winches are Hutton (they have conversion kits, but not for Barients) which are apparently pretty common in Australia. They have built in variable force limiter so you (or more importantly, your crew) don't tear your genoa apart. The only thing absent I would wish for is reversible electric, which some of the new Harken electrics now have, for a premium price. The installation looks pretty simple. So I decided to go for it while they were on sale this winter. I think I am the first person in the US to install them for this purpose, so will provide feedback/review (Practical Sailor?) when I have had a chance to use them.
This is what the setup will look like for comment. Battery will be in the starboard cockpit locker wired forward to the panel. One cable will go to the nearby winch and the other around the rear compartment over to the port winch. It all looks pretty simple to me. Comments welcome! Dave