@UWSkier Outboards vent exhaust through the propeller so that shouldn't be an issue. For the record, the Bombardier/Evinrude eTec 2-stroke motors produce LOWER emissions than their 4-stroke competitors. Given the enormous emissions the old 2-stroke outboards produced, the e-Tecs are truly an amazing feat of engineering.
@6balls You are correct in many of the points you made, especially about the lack of speed control on outboards. That is one thing I wish my eTec could have. But I can live without it as we only free ski and have no access to a course. I ski at 22 and sometimes 28 feet off behind my boat and the wake is great. Never tried anything shorter than that so don't know if the wake would be any gòod there. That might put you crossing the wake right at the hump so it might not be very good at 32 or 35 off but at 22 or 28 off, the wake on my boat is just as nice or even nicer than my friend's Prostar.
For me, however, the ability to tilt the motor and get the prop out of the water is a must and the performance, fuel economy and reliability my eTec delivers are major bonuses. I do wish it had speed control because the boat speed does sometimes drift a couple mph during a skier's run but we're just out there having a blast shredding up the calm morning water on a big beautiful lake knowing that afterwards we're gonna either be drinking coffee and Baileys in a hot tub or while soaking up the morning sun in anti-gravity chairs on a dock that gets the early morning sun so we don't sweat the imperfect speed or course control one bit. It's all good. ??
P.S. If anyone is thinking about getting an eTec outboard, I do highly recommend them but not the G2s. My nephew is a senior marine mechanic at an Evinrude/BRP dealer and works on them all the time and says the G2s are crap. The first gen eTecs are great, however, but they're getting harder to find since BRP got out of the outboard business and people who have them and love them aren't often willing to sell them. I'll never sell mine, that's for sure.