I would stick with either the two step products from either Ragg Topp or Meguiar's. The Meguiar's products are actually from their Marine line so they are designed for canvas biminis that sit out in the blinding sun for weeks on end. As previously mentioned, the sun is going to be your worst enemy.

Google Ragg Topp or check out autodetailingsolutions.com for the Meguiar's stuff. Both are excellent products.