So I'm trying to remove some stubborn stains from the textured no-slip floor on my speedster 150. Inthink its just dirt buildup and maybe body oils or something. (gross i know). I've used, spray 9, vim, bleach and a scrubbing brush and I just can't seem to get them out. Even my 2,500 psi power washer wont take away the slight discoloration. I'm getting obsessed about this now as I want my boat looking pristine and wondering if you guys have any suggestions??? Once I do get the stains out is there anything I can apply to protect the surface?