Unfortunately no. I had it done at the dealership when I had it custom designed for me. I'm sure any truck outlet and/or marina would be able to quote on it for you. Or - you can do it yourself! Just go see what Home Depot has.
BTW, I never had the problem with cold feet in freezing temps. My felt lined, heavy tread Sorel boots negated any kind of problem like that. Too hot in the summer? Wear canvas shoes. I think these problems are way overrated in light of the effectiveness of this product. JMO.
"A voyage in search of knowledge need never abandon the spirit of adventure."