Prep for Landing

 It takes a while (15-20 mins) to get all that gear on and almost the same to get it off.
Forget all about a toilet visit during a landing - impossible! So empty your bladder efficiently because you could be on ice for 2-4 hrs.

About 7/8 of an iceberg is below the waterline. The luminous green looks great when captured. A polarising filter will help enormously provided the sun is at 90 deg to your shooting direction.