We fly off BARO here. You have to, especially off 19L. If you flew off the RADALT, you'd be all sorts of fvcked up.
Our LSOs never say fly off the RADALT. They told us (and I'll agree to it based purely on my EE education) that the RADALT is innaccurate over water because of the way radio/radar waves propagate off of water.
Now that's really interesting. I can't believe that the two TW's differ on something like that. Never once did any IP in K'rock (atleast any IP I had) teach to fly the pattern off the baro, cross-check sure, but always always use the RADALT. And the LSO's made sure to make a point of this.
I know some guys from Meridian were talking about the RADALT and trees. Going from 60' high trees to grass would screw you up. Of course, we didn't have that problem in K'rock. Odd, I could've sworn my Meridian buddies told me they used the RADALT too. Hell, I guess I heard them wrong.
And no one had a problem out at the boat with their RADALT giving inaccurate readings. Man, I'm kinda shocked about that point.