I havnt done anything with my drain tubes yet. I saw one person in another post use fittings for their air compressor that were a perfect fir for those holes
After having a look around at the various options available for covers I saw this one that seemed to have decent reviews. If you happen to be in Canada and want a very decently priced cover (679 cdn shipped to your door) have a look. The instructions are poor but after doing a quick search I was...