First time tower - multiple questions

for a single trip with a short trailer you might get buy with adjust your factory mirrors. if not a cheap set of bull horns would be my choice. My first setup (grand cherokee pulling 19 footter) i had snap ons that i used once. never bothered again. My current setup doesnt need them.

out of curiosity what is a rental costing. I'm all for renting but if its going to become a regular thing id think looking for an affordable used setup would be a better use of funds.