The model Y roofrack is $500 (plus it's "out of stock" anyway), so ignoring the additional time taken to install the thing you could rent the HD truck 25 times instead
If you didn't get the tow package you could pay for almost half of it instead of getting the roofrack
If you get the roofrack and use it once, are you going to leave it on? or spend more time (and risk for a second time cracking the glass) taking it off? If you leave it on, it'll degrade your performance