Astronomers race to study interstellar interloper

With Vera Rubin's Large Synoptic Survey Telescope coming online, we'll likely see many more of these. It seems like it would be very difficult to physically intercept any large percentage; what is the next best alternative to physical interception? Lasers? Masers? Comet trail sampling? Pre-staged interceptors?(Interstellar Interloper Interceptor? I'd be interested in entertaining the possibility)

"We are Engineers at the Vera Rubin Observatory, Ask Us Anything!" https://old.reddit.com/r/space/comments/1lwgfre/we_are_engin...