Bucket hat: A type of hat. There is probably a pic of one on the "Shop OSO" link
Bolster: The driver and co-pilot seats in a boat. Bottoms of the seat drop out so stand up operation is possible.
OT: Off Topic abbreviation.
KI: not sure.
Nort: No one is really sure. It is a member that creates havoc with pics and is generally a blast to read his stuff. He HATES LOTO.
LOTO: Lake of the OZARKS.