I've towed my ski twice. The first time it was very hard to start, but I had a good battery and was able to turn it over. The second time, no joy. I ended up changing the plugs and it started right up!! I'm told when it was under tow, the oil delivery system still pumped oil to the cylinder heads causing it to basically flood with oil. The plugs were soaked with oil when I removed them. Is it okay to tow this ski? What do I have to do to avoid this??