Tabs will inprove you abilty to hold good wakeboard speeds BUT generaly make a smaller wake as the boat is more level with the tabs
It is catch 22
Generaly you need a line with the lenth adjustment loops in it so you can adjust the line to big spot in the wake
You really do not need that big of a wake until your ready for this
Which i would not allow unless you can get him to a school for the proper training WHICH is much cheeper than the ER BILL
Tommays