"We conceded cheaply in our box and weren't able to score goals and if you don't control the boxes it is hard to win games", said Watford manager Javi Gracia, whose side remain 13th, six points clear of the relegation zone.
"Maybe it wasn't a great performance, but the most important thing was to be competitive and win the three points", the Tottenham boss told the club's official website. "It will be a very successful season if we finish in top four".
Tottenham's 16th-minute opener was a gift as Watford goalkeeper Orestis Karnezis made a hash of collecting Kieran Trippier's cross, which allowed Christian Eriksen to sweep the ball into the path of Alli, who applied the necessary finish.
Kane slipped over as Son Heung-Min's cross came into the box but he picked himself and expertly turned home a low ball from Trippier, who always saves his best performances for this fixture. Nevertheless, Pochettino remained upbeat ahead of the Hornets visit, saying: "Our challenge is to move on after the semi-final and win these three points".
The midfielder, 31 in July, has said he will never play without pain and he sat out the final four league games of last season after Spurs had lost the FA Cup semifinal to Chelsea.
Barcelona celebrate LaLiga and Copa del Rey double with parade
The current style of play isn't almost as lovely as what we're used to, but it's just as effective in getting results. It was the ninth league title for Messi, allowing him to surpass the record he shared with Xavi Hernandez.
The Frenchman first got down well to deny Andre Gray after sloppy play by Eric Dier and then superbly kept out Richarlison's low shot.
Hugo Lloris is loyal and one of the most underrated goalkeepers in the world.
Victor Wanyama, meanwhile, has started just five Premier League games this season after a knee injury suffered in preseason and Pochettino will also hope to use preseason to try to restore the Kenyan to last season's levels, when he one of the most consistent midfielders in the country.
"I feel good. I'd like to have played better in the last few games, same of the team, but I feel good, feel sharp and could have scored more".
Pochettino, who has three years left on his contract, said Tottenham's recruitment policy and strict wage structure will stay the same "whether it is me or another". A year ago I got 29 goals so I'd like to beat that but we'll see what happens.