Leitch took just a few seconds to open the scoring, the goal timed at six seconds, putting his side on the way to a comfortable win to maintain their four-point lead at the top of the table.
Other goals were netted by Liam Walshe and Nathan Taylor.
Second-placed Trinity were given a much tougher game at home by First Tower, the latter who paid for a moment’s lapse in concentration, just seven minutes before the break, when John Beatson side-footed home his 13th goal of the campaign on a back post.
Tower – well-served by Gavin Toudic in the centre of their defence – had a player sent off in the closing minutes for the second game running; midfielder Danny Kennedy shown a red card by referee Allister Moore following a comment made to an assistant.
St Peter, who like Trinity have a game in hand on St Paul’s, maintained their title challenge following a 1-0 home win against Grouville, Aaron Parkinson scoring the only goal.
Jersey Wanderers picked up an excellent point in their bid to avoid relegation.
Junior Jay Reid was on target early in the second half to cancel out Ross Crick’s first-half strike.
The match at the Hockey Club finished 1-1 leaving champions Jersey Scottish’s hopes of retaining their title fading further as a result of taking just one point in their last three league matches.
Wanderers are now two points behind three-from-bottom Grouville who they host this coming weekend at the Hockey Club.
Jersey Footballer of the Year Peter Vincenti made his debut in Stevenage Borough’s 5-0 demolition of bottom-team Droylsden in the Blue Square Premier League on Saturday.
Vincenti, playing in central midfield, was one of five players who made their debuts helping Stevenage move into joint-second place on goal-difference above Torquay who dropped two points following a goal-less draw at Salisbury.
Leaders Aldershot lost 1-0 at home to Forest Green leaving Stevenage six points behind Aldershot and with a game in hand.
SPORTING Academics moved to the top of Division II on Saturday after hitting St Lawrence for six at the IJ Bathe Field in St Saviour, writes Andy Bradshaw.
Taking advantage of previous leaders St Ouen’s game at St Clement being postponed on Saturday, the Accies, who have played a game more, moved two points clear after scoring six times without reply through Phil Helleur (two), Paul McLaughlin Ben Blacker, Jamie Savory and Ben Gallichan.
Beeches Old Boys, who have played two games more than St Ouen, joined the Saints in joint-second place following a 5-3 victory at Les Quennevais against St John.
Simon Logan bagged a hat-trick and Bob Bonney and John Jefferson singles for the victors with the parish side registering through Darren Quintal, Graham Prescott and George Douglas.
Jersey Nomads consolidate fifth place following a 6-2 win against St Brelade.
At the FB Fields there were four goals from Carl Winn and singles by David De Abreu and Ged O’Donoghue for the winners and Jay Thompson and Ollie Nightingale for the losers.
Magpies went goal-crazy at St Martin/SCF when they won 11-2.
Steve Cumming and Matt Pamplin both scored four times for the visitors as Carl Dever added a brace and Luke Heynes a single.
Lee Richomme and Mark Harris replied for the hosts.