Sit in kayaks:
This is not medical advice. This is just what works for me; 68, bad knees, artificial hip, overweight, spinal surgery. This post is not intended for use with boats that will roll over if you look at them funny. Most recreational boats are stable enough to use these techniques. On a windy day, hold a rope tied to your boat, just in case
I have the same problem getting out of low couches. The issue is gravity, muscle strength, and weight distribution. If my knees are higher than my hips, I need assistance. The key to this is being in 1-2 ft of water and getting hips higher than knees so that gravity is an assist rather than a hindrance.
Getting out of a kayak:
1 - warm day, warm water = fall out and blame the wave nobody else saw.
2 - small cockpit? Good luck. Position your hands on the cockpit rim and try to hoist yourself above the seatback onto the rear deck and swing your legs out to one side of the boat and stand up.
3 - longer cockpit? Stay in 1-2 ft of water, pull one leg up towards your chest and swing it over the side. Pull the other leg up and swing it over the same side. Hold onto the rim of the cockpit in a convenient location and roll/lean towards your legs and stand up. This is like getting out of a rocking chair. Some water might get into the boat, but that’s obviously a design flaw in the boat, not your fault.
4 - rotate your body (head towards the stern, belly towards the keel) until you can grasp near the rear cockpit rim and get one knee onto the seat. Bring up the other leg and hang it over the side. Push up on the rear of the cockpit and stand up on the leg in the water bringing the boat leg out at the same time or after. You can do this in low water or on your lawn too after a heavy rain.
Getting into the kayak:
1 - squat as far as possible and fall in. Can be painful and embarrassing. If you can straddle the boat and squat, that can work.
2 - (remember to be in 1-2 ft of water), face the bow put one foot into the boat, grab the cockpit rim behind your legs, lean on your arms, swing in the water leg and lower yourself to the seat.
3 - (this works in shallow water too), face the stern, grab the rear cockpit rim, bring one leg into the boat and kneel on the seat, bring in the other leg, then rotate your body to the seated position (sounds more difficult and more coordinated than it really is).
4 - grab the cockpit rim fore and aft, lower your rear end into the seat, swing your legs into the boat and settle in for a good time. Let the boat roll towards your legs while sitting, water probably won’t get in.
For me, fooling around with bracing the paddle and shuffling my body while holding onto the paddle and boat, proved to be clumsy (me) and difficult. Also, not all kayaks are built with a secure place to brace the paddle.
Other ideas? Rebuttals?