GaryMayo wrote:Docking, backing up, dumping ballast, loading onto a trailer, getting somewhere on a lake?
My 50 hp Honda is way more engine than this boat needs for slow speed work, at least compared to the keelboat I had before it (27 hp diesel with folding prop). I can't imagine you'd have a problem docking and maneuvering with an 8 unless the current and/or wind is really strong.
I put mine on the trailer with the ballast in it all the time. Pull the drain handle, open the vent, put it on the trailer. It handles better with the ballast in it anyway (and the centerboard half-way down, plus one or both rudders down), and it drains quickly as you pull the trailer up the ramp. If you're worried about the trailer, pull up a little and let it drain a bit, then a little more, etc., though the extra weight of the ballast water shouldn't put any more load on the suspension and bearings than hitting bumps on the road with no ballast. Probably a lot less, in actuality. Mine's fully drained by the time I've cinched the bow to the vee bumper with the winch, usually, so it's really a non-issue for me.
As far as getting somewhere on a lake, if the lake is small, hull speed (about 6.44 kts, or 7 mph) is fine, and that engine should be fine in calm weather. For Lake Ontario, I like going fast when I have to, and so do my kids who wakeboard behind it.

As I've mentioned in the past, the Honda BF50 has been a great engine so far, but if I had to chance to repower it, I'd go for a 90 hp ETEC, not because there's something wrong with the Honda - only because I'd like more power, now that I'm used to the boat.
GaryMayo wrote:I want power. I need power to go distances on rivers. Boat trips that may last all day. For several days. This is something I will do as a vacation in mid summer.
I think you've answered your own question here. The

is a motorsailer. The only advantage is has over the older, pure sailers, beside planing capability, is the giant (by comparison) cabin and enclosed head. Being a motorsailer, I'd put a big motor on it. If I was going to use it as a sailboat, I'd stick with the other Macs that actually sail better.