Chris Darwin and Josh Irish both fired doubles while Jack Anderton also struck as Blues booked their spot in the SCFL Division 2 Cup final courtesy of a crushing 5-0 triumph over Upper Beeding at The Lashmar on Wednesday.
Kerry Hardwell's men are just a win away from lifting the League Cup, a point clear at the top of the table and have the Sussex Intermediate Cup semi-final - against Upper Beeding - on the horizon as they chase the treble.
And the Blues boss felt his side's class shone through against Upper Beeding.
He said: "We were superb all round.
"The boys were fantastic all over the park and myself, Tucks (Jon Tucker; Rustington assisstant manager) and Mark (Rowland) couldn't fault any of them. Our class really did shine through.
"In the last three games the boys have really turned a screw and been fantastic."
Rustington's progress to the SCFL Division 2 Cup final never looked in doubt as they raced 4-0 ahead by half time.
Darwin broke the deadlock inside 21 seconds to put Blues on the way to victory in the semi-final tie.
Irish doubled Rustington's advantage on 21 minutes before Anderton added a third on the half-hour.
Blues spot in the final was all but booked five minutes prior to the interval when Darwin struck again to make it 4-0.
Irish had his second nine minutes after the break to wrap up a routine win for Rustington.
Table-toppers Blues return to league action with a trip to rivals Angmering Seniors on Saturday.
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