If you have a more than adequate tow vehicle with a good WD hitch with anti sway, pulling it down the road doesn't make a difference if it's 28 or 30'. The added length may have an impact when maneuvering in tiqht quarters, such as some campgrounds and gas stations. I pulled a Sunline that was almost 30', but with a 1 ton truck and Hensley hitch, I never had any sway at all...period! But I can tell you that going from almost 30' to almost 27' (Minnie Trailer), it is a little easier, at times, to navigate around gas pumps, tight campground turns etc.
If you need and want the 30' trailer, just make sure you have the truck to tow it and a good hitch! Then, take your time and learn how much room you need for turns, and be careful not to get yourself boxed in at a gas station. More than once, I've had to skip a station and find a different one. I also keep an extra empty gas can in the truck bed in case I absolutely have to get some gas in the tank and need to use the can.
