I'm in my 60's and started kayaking last March with a 70 plus pound Hobie. Did several of the things Perry recommended including class and 2 rentals before purchase. One heigth-challenged person I know puts his Hobie kayak INSIDE his small SUV so that he does not have to lift to top of rig. There are ways to do most things - but do check health. Even that may not stop you - rather require a very slow start and easy launch.
Some of the Hobies pedal as well as paddle. That lets me use larger thigh muscles to move the kayak WHILE I hold and cast my rod. It also allows me to switch off and paddle for a while to get better exercise for upper body and go much farther.
I fish Dana Point and Newport Bay most but will do Huntington Harbor and Long Beach soon. 25 trips last year on the new yak.
Steve@seaslug.com