Which type of Linewatch is employed when roving patrols are deemed unsuccessful?

The type of Linewatch employed when roving patrols are deemed unsuccessful is stillwatch. This approach involves maintaining a stationary observation point to monitor an area for suspicious activity. By using stillwatch, authorities can effectively gather intelligence and observe patterns that might be missed during moving patrols.

In situations where roving patrols have not yielded the desired results, deploying officers to a fixed location allows for a more thorough surveillance of specific hotspots or problem areas. This method raises the likelihood of detecting ongoing suspicious activities or events that require intervention.

Other types of patrol, such as motorized or foot patrols, are focused on active engagement and mobility, while high visibility patrols aim to deter crime through their presence. However, when previous methods of roving patrols lack effectiveness, stillwatch provides a strategic alternative aimed at gathering important intelligence and maximizing observation capabilities without the movement that may miss critical details.