I have a large gooseneck Wells Cargo enclosed trailer that I use for some multi day race events but when I do track days it was more work to load and basically overkill
Last November I bought an all steel tandem axle trailer built by Carson
Brand new with 3,500 lb axles, electric brakes, price with tax and license $2,200
Great quality, tows well just my advice if you are shopping for one
Google Carson Trailers for dealers