When sourcing affordable fishing boats, the three main materials are High-Density Polyethylene (HDPE), Aluminum, and Fiberglass (GRP). HDPE is the most cost-effective and virtually indestructible, ideal for rocky rivers, but lacks high-speed performance. Aluminum offers a balance of lightweight durability and low maintenance, though it can be noisy. Fiberglass provides the best hydrodynamic shapes and aesthetics but requires a higher budget for gelcoat maintenance and is prone to cracking upon heavy impact.