My first take on this is...um....overly ambitious shall I say? 80+ miles with two locks is questionable in my mind. My hope is that we don't plan on running more than 16-20 mph. (Somewhere between 13-18kts). If there are any no wake zones, I think it fair to figure those in at around 5-6 mph. Ideally, I would hope we are going to enjoy the river, it's cities and it's scenery, along with the camaraderie of each other, and not just speed along to get from one end to the other. To be honest, I thought 50 miles a day was ambitious, but easily doable if the weather Gods are with us. Figure about an hour for the two locks, assuming those locks are like those here on the Mississippi, and we can get right in when we arrive. Otherwise, if we have to wait for a commercial tow going through, it could be another hour or two longer. For a comparison for those of you that have done the California Delta Cruise, my charts show that was 61 miles, San Francisco to Rio Vista. I know we made pretty good time on that, but I believe we were running between 20-25mph non stop on the way back, with no locks or no wake zones.
Ok, my two cents worth. I don't know anything about the Snake & Columbia Rivers, but I have done a lot of cruising in both rivers and the Great Lakes, and just think we are being overly ambitious about 80 miles a day, with two locks included. I appreciate all the planning you guys are putting into this, and I'm really looking forward to it. But with 4000 miles round trip on the boat trailer, I like to enjoy the time on the water while there! 8) If the others feel 80 miles is very doable, I'll put my concerns aside. Colby