Borst, spray on wipe off is ok for a touch up like removing a black streak or something. The best stuff going IMO is made by Collinite. It's a two part system but well worth it. Start with the Collinite Fiberglass Cleaner # 920. You can apply to entire boat if you so desire. I did my 37' one evening & came back following day to remove. Very easy to remove !! After all the cleaner is removed, apply the Collinite Heavy Duty Paste Fleet Wax (No. 885). DO NOT, DO NOT let it dry. Do I have to repeat that. If you do, you will come looking for me for recommending the product. It, however comes off as easy as any other liquid AS LONG AS YOU DO NOT LET IT DRY !! Just do small areas, 2x2 or 2x3' areas and remove immediately. If you should apply and go for a beer & it drys on you; don't panic, it does come off. To make it even easier just re-apply right over dried portion and buff off. I think you'll like it. I've been using it for over 20 years.