THE ADDITION of Jack Watts turns Port Adelaide's forward line into a potent three-headed monster, according to veteran Justin Westhoff. 

Watts made an instant impact at his new club, booting six goals straight against Adelaide in last weekend's JLT Community Series game. 

The 26-year-old was hot and cold during his 153 games with Melbourne, but has slotted in beautifully to his new surroundings at Alberton Oval. 

Watts gives the Power another key target alongside Charlie Dixon, who is coming off a career-best season when he booted 49 goals and finished runner-up in the club's best and fairest. 

All Australian small forward Robbie Gray will also benefit from having Watts and Dixon drawing the attention of the opposition's defence.

"Having Watts adds to our forward line systems and our flexibility," Westhoff said. 

"To bring (Watts) in and have another prominent tall forward will help Charlie and Robbie Gray as well. 

"To have that three-pronged attack up forward and have guys like Chad Wingard is a pretty potent forward line." 

The Power are toying with the idea of playing three talls, adding 2016 first-round draft pick Todd Marshall (198cm) alongside Dixon (200cm) and Watts (196cm) in round one.

Westhoff believes it can work, although other sides, most notably premiers Richmond, have gone the other way and successfully built their attack around small forwards and manic pressure. 

"With Toddy (Marshall), he can play small and he's quicker than anyone in the forward line," Westhoff said. 

"As long as those guys are tackling and doing as much as anyone else, there's no reason why that won't be an option going forward.

"We'll definitely go to that at times throughout the year." 

Adding Watts, Steven Motlop and Tom Rockliff should make the Power a more attacking side this year.

But Westhoff said that wouldn't come at the expense of the team's defence.

"The main objective for us is having a strong defensive team, I think that wins you more games than kicking too many goals," he said. 

"That's been our focus. 

"Offensively, that's still a big weapon of ours and we've brought guys in who can bring that level up a bit, but our defensive side of the game is much more important."