Eddylines are the real problem at the higher levels, a couple are particularly vicious, and the one just left of the Rock of Shock (Skull) is one of the scariest things I've ever seen. I would rather take my chances with Paralyzer on Lake Creek than get into that eddyline.
A not-very-experienced oarsman running baggage could be a real problem, all depends on if he/she flips or not. I don't know if Hawaii Five-O is still there at 20K, but that is a must-make move for rafts (just a 90 degree pivot, but you gotta do it or you're counting fish). At that level, rafts should have a solid person on the oars and kayakers should be comfortable in class IV big water or at least be certain they aren't going to swim in that kind of rapid or they could swim a very long way. If you get into the eddylines, rolling may take some patience as well. Everyone not certain of their skill should dress for a long swim. Rafts should not even think about scouting Skull or you will never get to the right to set up and make your line.
All that said, Westy in the five figures is great fun. You will have a blast. Oh, and the best part is that the flatwater moves right along, no endless rowing and paddling - yeah baby!
Ditto on the dog PFD. A dog could drown at that level easily. Better yet, leave the dog at home -- the parking lot is a bad place for them and I've heard many a story from the rangers about dogs knocking over the water bowl right after people leave the takeout to shuttle. Actually, now that I think about it, there was a thread about dogs at WW recently - I'm not sure you can even take them down anymore.
Join up, suckas.
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