Neil Messick is one of our members and is a tractor dealer and deals with towing on a regular basis. He also has a website with a lot of information, tractor data, and recently posted a basic description of trailer types and towing issues. I never see Neil publicize his own site, but he does come here to give us some great tractor advice, often from the perspective of an industry 'insider' so while he doesn't publicize his website, I am happy to do it for him.It is probably too basic for any seasoned towing pro, but it is a good read for most folks who are researching different trailers.