What is your hard deck? 300 feet 180 KIAS?
Haven't done one here at VP-30 so I can't speak to that...but all the ditching practice we did in Advanced was way above that. We would usually start 1000 above and the ditch deck was say 5000'. Speeds were...I wanna say about 120 kts...but that's a guess...The C-12 is officially gone from memory. I guess the difference is that the ditches we practiced were entirely instrument ditches...on an assigned heading and based on radalt.