This document proposes a technique for compressive data gathering in wireless sensor networks using mobile data collectors. It involves identifying correlated sensor data within clusters near polling points and defining a tour plan for mobile collectors that avoids visiting these correlated sensors. This is done using a spatial correlation method. The goal is to identify new optimal polling points by avoiding correlated sensors, which reduces the tour length of mobile collectors and the number of polling points needed. This extends the lifetime of the wireless sensor network. The document provides background on related work using mobile data collectors and discusses how the proposed approach improves upon prior methods.