My husband and I boat the Rogue every year in our 16' cat. We always run the fishladder. While some people have clean runs at the falls, there are often flips, swimmers that flush out of the boat, and impact injuries (heads hitting frames or dry boxes, etc.).
Rainie Falls comes early on the first day of a wilderness trip and, while we'd probably be fine running the falls, we'd prefer to avoid potential problems. There are hiking trails to the falls, but no roads or help immediately available. To us, it's just not worth the risk.
I am attaching a close-up and distance shot of the ladder at about 3,000 cfs. When you go, it will be substantially bonier.
In terms of the middle chute... it has its own problems. See the following video:
Other things to note:
1. The vast majority of boats on the Rogue elect the fish ladder.
2. If you have to line any boats down the ladder (like your wooden dory), do it from river right. Do not line from the bank between the ladder and the middle chute. The bank here can be unstable. And, make sure you have ropes that are long enough!
3. Tuck-in your oars on the ladder. There's just not room to use them effectively and I have seen injuries to boaters from renegade oars.
4. Unlike the falls and the middle chute, scouting the fish ladder is difficult. The only place you can attempt to scout the ladder is from the right bank, and it's not easy due to to brush. I would hug the right bank, scout from the boat, and go for it.
4. The BLM has an excellent guide to the campsites and rapids on the Rogue. I would make sure you download or pick one up and take it with. It is especially useful when combined with a GPS.
5. In addition to Rainie, I recommend that first time boaters on the Rogue scout Upper Black Bar Falls and, of course, Blossom Bar. Both rapids are VERY easy scouts from river right.
I'm sure you've already done this, but you should be certain of the correct line at Blossom. You tube is a good resource. 2 people died at the picket fence portion of this rapid last year, so it's not to be taken lightly.