Turns are a little more rare now because our line values are higher (manning is a little bit thinner)
There's plenty of turns in the system and I do some every month even as a pretty junior guy. If you're quick it's easy to pick them up in give-away as the ultra senior guys bid for max turns and then give it all away to either work open/premium time or to Lance Captain.
HOWEVER, as a junior guy you can pick them up but there's none avail to TRADE for. So you can easily pick up turns to ADD to your schedule, but you still have your originally bid schedule.