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My partner observed I'm stronger not from paddling but from loading and unloading my kayak on and off the roof of the car!
Like you, I only need to put it on the rack at home and take it off when I'm done. At the launch, there're always others who can. Look into some sort of loading aid (towel or rollers to hydrolic Hullevator) so you can paddle what you like rather than paddle what you can lift.