I recently tried Meguiars canvas treatment on several canvas samples that came with one of Ehsan's soft tops. http://www.meguiars.com/?boat-cover-care/Canvas-Protectant $20 per can. Does not appear to affect the material in any adverse way. Material remains soft and plyable. Has anyone tired this product and if so how does it hold up over time? Any other feedback? Looks like good stuff so far. I have tried Canvak which works well. My only issue is that it is fairly heavy - brush or roll on - and seems to build up over time making the canvas heavier and a little less plyable.