I don't think they sell Flicka razors anymore but those would be great for those of us with dexterity issues. I think about it every time I shave.
With that said, I have a shower bench (transfer type) and a hand held shower. That has been a lifesaver for me in the shower. I can now sit and shave which is safer with my balance issues and muscle fatigue. The tremors, well...I don't shave when my tremors are bad. Safety first.

I also stop shaving if I don't have good control over the razor. The good news is that I am getting older and don't have as much hair on my legs as I used to. That's one of the advantages of getting older.
Have you thought of going to a salon and getting a wax? If I could afford laser removal I would do it as that would save me the hassle I go through every time I need to shave.