The problem with gravity pull is you first need to mach orbits which takes a long time or a lot of delta V.  From an energy and complexity perspective  your best bet is to impact with a large low mass object like foam or lots of tiny objects like a cloud of sand.  The advantage being just about any orbit that gets you there works and high relative velocity&#x27;s are good.  The problem is it&#x27;s easy to miss.<p>A solar sail is a solid candidate as you get a large low mass object and &#x27;free&#x27; delta V at the same time.<p>PS: Due to risk of malfunction you likely want to send several ships anyway, while the miss chance is an issue, the cheaper direct approach lets you take more chances.