Feed 1/2cup or 1 cup of dried raspberry leaves daily, a month before spring, up till late summer/fall. You need to take them off raspberry leaves part of the year, and winter is the best time for that. Herbco.com is the cheapest place I've found. 1lb lasts about a month. It's very inexpensive and worth it.
Grab a spray bottle and fill it with iodine. (It degrades in sunlight, last I checked, so store it in a dark place). Spray the soles daily. (Try to avoid the frog and heels). Once a week (or after a trim), paint the soles with Venice Turpentine (buy online, or a lot of local tack stores have it, Blaine's Farm and Fleet included. Tractor Supply might as well). Just once or twice a week or it hardens the hooves too much. Pick the hooves daily. Hooves are usually healthiest when they're outside 24/7. In a stall the hooves are usually wetter and harbor more bacteria, which can soften the hoof.
Also, you ought to be feeding a supplement. The cheapest way is to just feed straight biotin. Smartpakequine.com has the cheapest biotin supplement that I've found. You need to make sure it is the correct strength. 20mg a dose is what you ought to be aiming for. I suppose you could also go and buy biotin pills for people and feed that. Just make sure to feed 20mg daily. It takes a month before you start seeing the effects, and about a year before the new growth comes in.
Realize that the hoof grows from the top down, and also realize that the hoof is like your hair: you can put products on it and get some results, but just because you start taking supplements doesn't mean your hair is going to suddenly become awesome. The hair you see is dead. You have to wait for the new hair to grow in before you see results. Same with the hoof.