We could task off-duty personnel with sufficient fabrication experience to retrofit several probes with reaction control systems. That would allow the onboard sensors to track the telemetry and alter its course, so that two intercepted probes would not just reveal the intersecting origin and point of launch. That would allow us some measure of security in expanding our net to locate a jump point. Furthermore the probes could be fitted with storage tanks and filled with a neutral element or compound, possibly two. A helium trail would allow us to better observe the gravitational effects while also being more susceptible to solar radiation, eddies from the storm, or any other environmental effects. As a second option, something with more mass would likewise be more resistant to those forces.