Cannon Uni-Troll 10 Owner's Manual page 5

Installing the Base on Your Boat
Decks up to 7/16" thick
Where access to the underside of the deck is
not available, the mounting base can be mounted
using wellnuts. Use the base as a template to mark
locations and drill four 1/2" holes. Mount the base
using four 1/4"-20 x 1 1/2" truss head screws and
four wellnuts. Tighten the screws so the wellnuts are
firmly compressed as pictured.
Decks thicker than 7/16"
For decks thicker than 7/16", or where the
underside of the deck is accessible, mount the base
with screws, nuts, and washers. Use the base as a
template to mark the locations and drill four 9/32"
holes. Use four 1/4" -20 x 2 1/2" truss head screws
and four each flat washers, lock washers, and nuts.
Fasten the base to the deck as pictured.
NOTE: Wellnuts cannot be used on decks thicker
than 7/16".
Outboard Facing
Note Locking
Side
Slots in Base
or
Gunwale
Decks
up to
7/16"
Thick
Base
Wellnuts
Base
Decks Thicker Than 7/16"
Washer, Lock Washer,
and 1/4-20 Hex Nut
Stern Facing
Rear
or
Stern
5