Having read recommendation on a thread on this board, I bought some traffic film remover to clean the tubes. I started with 10:1 dilution, which worked well and I was happy with the results.
Unfortunately, the TFR appears to react with the rubber on the trailer rollers and, when I launched/recovered the RIB, I ended up with black marks on the hull where the rollers make contact. These are a real pig to get off. I've tried ordinary detergents, white spirit and thinners but none of the above really shift it well, although I can remove the worst of it. However, the rollers are still affected because I'm getting new marks whenever the boat is launched or recovered.
Any ideas for cleaning the marks from the hull and preventing new marks?