There's a fair bit to know about setting up sidecars properly, and having a high centre of gravity makes them doubly dangerous. Like with a trike it's better to keep Mass near the ground. Having suspension can make it very " leany" when turning. and the front forks "trail" can make the steering heavy . Usually the sidecar is sprung in relation to it's chassis at least and some Movement between the side car frame and the Bikes frame. . The assymetry of accelerating and braking can worry some new riders, till they get more experience. You have to look a fair bit ahead to set up your Cornering. It's near impossible to ride a combination with No weight in the chair, safely. Too fast into an off camber LH downhill corner, anytime, will see you in the bushes or a head-on with something coming the other way..You either get to like the challenge or you Hate them. . They put a lot of strain on the engine and the Bike frame and wheels. (side loads). Plenty of original setups were 3 Point. The Goulding was a Popular make here till about 1930 after which it went to the USA. Another big presence was the Dusting and the Yeats was a well set up 4 point mount that was well accepted. and good quality. Tyre wear on the rear wheel can be quite Poor with bigger wider outfits. . Nev