Tom21 makes 2 foot holds. One is a normal hold and the other holds an extinguisher. Both are pretty nice.
The reason to keep one is because they are required. Requiring a stand up to have it is dumb, but it can be like $100 ticket, and some of the cops can be douches. I've had patrol give me a hard time at the lake just while I was standing on shore. Told me if I didn't carry my reg with me he was going to give me a ticket next time for over $100. I like avoiding trouble. I have a stock hood and am keeping the stock holder so it's a non-issue for me.
There are other options other than Tom21, but I was at his shop a few times when he was designing it and it looked pretty sweet to me.