What type of seating do you have?
I have the sunport seating, and my battery switch is under the rear bench seat (which is supported with removable starboard support box). I don't have a picture of the switch under the seat, but here is a picture of the switch when all the seats and support boxes were removed:

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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings