I generally take my iPhone with me hunting and fishing. I have a Plano waterproof case that is made for it. This case is bulletproof and my phone is 100% safe while it is in it. However, to use the phone I have take the phone out of the case.
So, I have started using a second, waterproof phone when I am out in my kayak or boat.
An added bonus to this whole thing is that my workplace does not have my fishing phone number! How many relaxing fishing trips have been tainted by an "urgent" text, voicemail, or email? Too many. Way too many.