How to convince/arrange hearing aid for Dad?

As others have said, there are some amplification tools that might work at least a little. One thing, the in the ear hearing aids are harder to adjust to. Some people want them because you cannot see them and they like that due to vanity. I have had hearing aids for more than 10 years; so I got them when I was in my middle 50's. My father's side of the family all needed hearing aids and I guess I got their "ears". It was really an adjustment to finally agree that I needed them. I felt like I was "defective". But I wear glasses which for some reason did not bother me so I had to get over it. I thought I wanted the in the ear ones but I realized that the ones that hang over the ear are easier to get used to and more comfortable to wear.

If your father is willing to wear glasses to read, you might remind him that wearing hearing aids to hear is the same. A simple version of the explanation (and if you are an audiologist, please don't yell at me) is that hearing is handled by what are called "hair cells" that line the cochlea (inner ear). The hair cells are frequency specific so the ones that have transmitted sounds in normal voice range sort of wear out over time. So voice sounds in normal range get muffled and hearing aids help with that. If you raise your voice to speak louder to someone, the hair cells for that frequency range hear that as yelling. So then the person hears that as yelling, which it is.

My Dh finally agreed to HA's last year.

He also said the rest of the world mumbles--seriously, says people are lazy and don't speak clearly.

I am just glad he has them and usually wears them. There is a learning curve and he missed it--as he is so stubborn he won't TRY to pay attention to others and such--a younger person would care more and try harder.

And yep, his cost well over $6K.

Type sound amplifier in the search box and that will give you articles and others solutions to this problem.

No good answers from me. I’ll just say I sometimes think there may be a “too late” point for hearing aids. My dad got his about a year ago after years of denial about needing them, all the things you mention about the blaring tv and saying others aren’t speaking up. His $6000 hearing aids are state of the art, yet he can’t adjust to them, finds them uncomfortable, says they aren’t right, says they don’t work, etc. We’ve repeatedly gone back to audiologist for help, only to find that they are fine. He’s been repeatedly educated on their use to no avail. I hope you can get your dad to agree to try them and I’d think the office would be taking proper Covid precautions, but also consider if he’d be truly open to trying hearing aid use. It’s a lot of wasted effort if they can’t adjust to something new. And know that the VA helps with this if he’s a veteran

Martida, I agree with Grandma, if your Dad is resistant you won't be able to convince him. It may be for several reasons: pride, new technology, tiny size and clumsy hands... They are a very expensive purchase if he agrees and then goes home and loses them or doesn't use them. And you may be sorry if he does agree to use them as you will be his go-to person every time he can't get them to work or loses them.

On this forum I've seen people suggest some pretty useful products that may help: devices that hang around his neck and amplify sound, headphones for him to privately listen to the t.v., etc. I can't remember what they're called but search on this site and or the internet to find them. I wish you success!

My first thought is...If dad is competent you can not convince him to use hearing aids. Just like you can not convince someone to use a cane, use a walker, a seat belt or any other device.
You can try asking him what would happen if mom fell and was calling for you and you could not hear her?
What would happen if the carbon monoxide or smoke detector went off, could you hear it? (by the way if they would go off at night even if he had hearing aids he would not have them in, might want to look into getting the kind with the flashing lights.)
What would happen if someone broke into the house? Would you hear the door open or the window break?
I doubt any of these would change his mind. But it is something for you to also think about. Maybe cameras linked to your phone? He might not like this option either and give him another thing to think about, if he used hearing aids a camera would not be necessary.
Again as long as he is competent you can't "make" him do anything.