Welcome John, I'm sure you'd enjoy the experience. I went to watch the MGP one year, heard they were short of Marshals, so joined up and now do both TT and MGP each year. Just wish I'd done it a lot earlier as it's a good way to put something back into the sport I've enjoyed watching for so many years. I was 'allocated' to Whitegates in Ramsey and was lucky to have 3 very experienced Marshals who took me under their wing. Gloves are a must as are supplies of drink and food as not every Marshals post is near to shops etc.
Paul