Call him on the phone number on the website (or 0411421958)and yes, I did my float training at PLB.
If Henry cannot do your training (I'm not sure if his aircraft is flying at the moment), I would certainly talk to Steve Krug. If floats float yer boat, then time on a Beaver would certainly be looked upon favourably.
Enjoy:
http://www.dhc-2.com
If you are speaking to either Henry or Steve, say G'day from Dave in Darwin.....
Regards,
OpsN.