You've got it John. My 88 year old dad has dementia too. It's really hard to see your parents have trouble with the simplest things when you know how vibrant, helpful and important they have been throughout your life.
My dad was able to go with me last week when I picked up my last Cub purchase, a '57 Lo-Boy with Fast Hitch, and he really enjoyed getting out for the 130 mile round trip. He doesn't get out as much as he'd like and gets bored just staying home.