Tips? --- yes - Train, proof, then train some more.
A reliable off-leash recall is among the hardest standards of compliance to achieve, & most dogs don't get there B4 they're 18-MO to 2-YO... that's WITH both training sessions & diligent proofing, plus avoiding situations that let the dog take off, & fail to return when called.
U start indoors on leash, dumb as that sounds - then indoors off leash, in the same room.
If the dog fails to comply, put a drag-line on for training sessions, & only call them ONCE - then when the dog fails to comply, say nothing, don't sigh, roll eyes, groan... walk them down, or just quietly wander over when the dog is engaged in whatever, TREAD on the end of the drag, then pick it up, & bring the dog to U to be rewarded handsomely - a jackpot would be good, here.
U want to make an impression: "coming when called ALWAYS pays off".
That also means that U cannot call the dog for "bad things"
- a bath, claw trim, to take her or him out of the dog park when they're happily absorbed in play, to bung them in the house & depart for an 8-hr shift at work, etc.
As always, the dog defines what's "bad".
CONSEQUENCES drive behavior:
if calling Ur dog to the door from the backyard means 'crate / U leave for hours', why
should the dog be eager to comply? ... that's no fun!
OTOH, if calling Ur dog to the door from the backyard = 'stuffed Kong in the crate', that's more like it!
U can also separate the 'bad' thing in time from compliance: call the dog, play fetch or tug, THEN... into the house with U, 2 or 3 minutes of simple training, crate the dog, go to work. // That 5-mins or so serves to buffer the transition & helps avoid tainting 'Fido, come!' with Bad Associations.
some helpful clips from Pos-R trainers
Levels Training has proofing steps built-in: Training Levels (originals) | Mind to Mind