Aerotrekking is the art of low level flying by following the countour
[sic] of the ground. Flying at near-ground level creates a feeling of
being a part of the scenery - a connected sensation with the world you
are flying through. It is very different from the sense of being an
observer, which higher altitude flight creates.

Let me think....
1. low level flight
2. student pilot
3. high risk
4. high insurance cost

no mention of the aircraft being used