First off, there aren’t any trailer hitches available for a Porsche 911.
Look at the car sometime, the exhaust tip is in the center of the bumper, right where the hitch needs to go.
Next up, buying a used Porsche isn’t the best idea if it is going to be your only vehicle.
The cars are maintenance intensive, occasionally break parts that need to come from overseas, and can take a while to get fixed up back to running condition.
You will always NEED to have a second vehicle with a Porsche, so skip the idea of having one as your only car.
Now, here’s some advice from a current Porsche owner ('98 Boxster):
If you have enough money for a 911, put it in a bank account, or a CD, and wait a year.
Take the interest you earn, and buy your beater car/truck/whatever.
Then wait another year and after you get that batch of interest, buy a Porsche from a dealer with a CPO (Certified Pre-Owned) warrantee. That increases the warrantee from 48k miles to 100k miles, and adds a couple extra years. The warrantee will save you some expensive repairs.
Also, when you do buy the car, DO NOT lug the engine. Wind it up between shifts.
Unless its an automatic, as that won’t really let you lug the engine anyway.
But who buys a sports car with an automatic transmission, anyway?
BC.