The Rudder is really just an extension of the Ramp route that some people have done over the years, but found themselves trapped on top of this formation since there wasn't an easy exit. This is an excellent aesthetic finish with a classic Sandias position on an exposed ridge.
The Ramp actually ends lower and traverses off through the trees to the north after its last pitch.
If you do the Ramp, this is an excellent addition to the day as rap anchors are now installed (since 2007) off the top.
Location
You can also take just on rope to perform 2 rappels if you use the Sick Bird or 606 rap anchors (606 anchors provide a standing transition. using a single rap, stay climber's hard right. Otherwise, you'll need two ropes to rap from the Rudder's anchors.
Protection
Standard Sandia rack (no different than what you have from the Ramp route). 2 BA with chains.
Amy, I agree that the description is somewhat nebulous. Take a look at the beta photo that I posted under Echo Canyon and it should clear things up. Enjoy.
I used Orlando's photo (sorry and thanks, Orlando) to show how to get there and out. Use Runnel Runner to rap in and climb out on and you'll never have to do that gnar hike out again ! I posted it on the Rudder page.