The LineHut assists in managing fly line on windy days. The LineHut is built out of durable HDPE to withstand the challenges of salt and fresh water fishing. A heavy 1in base keep the LineHut upright under the most demanding winds. The square base allows you to lay the LineHut down in the cockpit and not roll around. We add rubber injection molded spikes in the base of the LineHut for an extra $20.