The Pilgrims trailed to Cameron Johnson’s strike inside 23 seconds at Oxford Street but were level courtesy of McGhee’s 12th minute equaliser.
Shaun Pendleton restored Main’s advantage on 36 minutes but Rollins struck four minutes from time to restore parity for a second time.
Boston (4-4-2): Alex Brown (Matt Urwin 46); Liam Marrs, Scott Garner, Zak Mills, Julian Bennett; Jamie McGhee (Kaine Felix 46), Kyle Dixon, Grant Roberts (Cameron Dear 46), Jake Sheridan; Dayle Southwell (Mark Jones 46), Harry Limb (Jay Rollins 46).