I’m on my second easy in half hood, the first one for my S3, at the time , now for my SV. You cannot totally make them waterproof, because as said , effectively you have made holes in them , with all of the stitching. My first one I used a waterproofing stick, and went over all of the stitching on the underside of the hood, you can normally get these from a camping shop, I have not done the one for the SV as yet. SBFS are a very good company, there products are superb, I’m sure they will help you. Kingsley