Douglas B recorded an emphatic 75-5 win over Castletown to book their spot in the Manx Plate Final.
Andy Evans led the Douglas scoring with a personal haul of four tries.
There were two apiece for Conor McCaughen and Jack Moore, with single tries coming from Carl Conroy, Richard Melia, Mark Shortland, Liam King, Danny Creer and Shay Waterworth.
Vagabonds’ Ladies hit the top of the table in Womens NC North 1 with a 53-12 win over Liverpool Collegiate at Ballafletcher.
They now go two points clear at the top from Preston Grasshoppers but crucially have a game in hand.
Boxing: Tyson Fury's sons part of Manx squad to face Merseyside & Cheshire
Cycling: Rider views sought on latest MTB series
Football: Manx quartet feature in Tranmere Rovers victory
Tennis: IoM team confirmed for 2027 Island Games