Guy Whittingham believes Pompey learned a lesson from their goalless draw at Braintree.
The Blues struggled to trouble the non-leaguers’ goal, while Phil Smith produced some excellent second-half stops to keep the visitors in it.
In the end Pompey’s unbeaten pre-season programme continued, even if they didn’t shine.
But Whittingham insists his side can take plenty out of the fixture.
He said: ‘I was really pleased, it was a tough game.
‘Physically they were stronger than the Hawks and Bognor, who are two decent footballing sides.
‘I am not saying Braintree don’t play decent football but there was more of a physicality to the game and I think more likely to what we will face this season.
‘From that point of view it was a great exercise for us.
‘We didn’t really create that many opportunities but it is still early days for us, we’ve got a new bunch of lads together and it will take a bit of time.
‘We played well at times I thought until we probably got to the final third and then that ball wasn’t quite right.’