Most light sport aircraft are day VFR only, with an altimeter and airspeed indicator being the primary instruments. Some ultra lights don’t even have those, and

Most light sport aircraft are day VFR only, with an altimeter and airspeed indicator being the primary instruments. Some ultra lights don’t even have those, and you use visual cues and the “feel” of the craft to judge your energy/speed/height - and our perceptions are not the most reliable.