What are the key factors to consider when selecting a saddle for technical trail riding, and how do different saddle designs and materials impact comfort and performance in this specific type of riding? For instance, how do saddles with a more pronounced cutout versus those with a continuous surface affect pressure points and overall comfort on longer, more technical rides? Are there specific saddle features that can help mitigate the effects of repeated impacts and vibrations on the trail, and if so, what are the trade-offs in terms of weight, durability, and overall performance? How do different rail materials and saddle widths influence the saddles ability to absorb shock and distribute pressure, and what are the implications for riders with different body proportion and riding styles? What role do saddles with adjustable features such as nose tilt and saddle setback play in optimizing comfort and performance for technical trail riding, and are there any potential drawbacks to consider?