Here's the rest of the story on my buck/boost transformer search: A friend was shopping Fort Lauderdale's inimitable used marine gear emporium, Sailorman, yesterday morning and came across a used Wards Marine Electric portable booster transformer. The asking price was $1200, but with a little four-way negotiation (Sailorman-owner-friend-myself) the seller came down to $500 and I bought it, tested it on the pier, and pronounced it perfect for my needs. It goes between the shorepower outlet on the pier and inlet on my boat, handles 50 amps at 190 to 240 volts, and boosts the voltage 10%, meaning I can boost 200 amps to 220 and 208 to about 229--no manual override so voltage is boosted 10% regardless of input voltage. The sucker is heavy (I estimate 30-35 lbs.) but I think it's perfect for my needs. And at $500 it came in at close to the same price as the parts for building a new one. The good news is that there was another identical used one offered by the same seller at Sailorman. If you're interested, call 'em at 954-522-6716 and tell them you want the one just like item number C6588-1 I bought yesterday. It's my guess the seller will let it go at the same price but YMMV. Shipping will be expensive because of the weight and I cannot say whether Sailorman will ship so that's definitely something to ask about. Again, thanks to everyone for all the help. --Milt Baker, Nordhavn 47 Bluewater, Fort Lauderdale