[Bushwacker]

"Ideal" depends on intended use and objectives! Do you want low fuel consumption or do you want to cruise at 40 mph? Do you run in flat inland water or offshore? Weight balance is important, as the 20' hull was designed in mid-60's when the biggest motors were about 300 lbs, so IMHO, the more engine weight gets above that, the more it screws up the ride and the harder it is to plane at low speed which you like to be able to do for comfort in rough water. It's a very efficient hull and will ride VERY well and cruise nicely at 20-25 mph with as little as 85 hp; some of the Tracker-built models (80's and later) appear to have plywood decks instead of balsa core however, so may be heavier and a little less efficient. Some guys on this site run 225's or more on a 20, but that hull doesn't need nearly as much power as the newer wider heavier boats! Just don't hang a 500 lb motor on it and expect it to plane at low speed and ride like a SeaCraft is supposed to!

The Zuke's are good motors and I almost bought one, but don't overlook the E-Tec's - they're light, quiet, trouble-free and the hp ratings are VERY conservative. The "150" is really a 165, and I suspect the "115" is at least 120 or 125, and would be plenty of power if fuel consumption is a big priority; will still run mid 30's. With the "150" I get about 10 mpg trolling, over 4 at cruise and average about 5 (and can run almost 50, but that's not a high priority!)