I just did the math, and a lot of other techs will come to the same conclusion. I have basically been on the road since 2003 and did so because the pay was good and the per diem saved was good, plus the fact you could stay off the road 1/2 the year living on unemployment. I have accepted a job this spring that I may cancel due to the actual take home money received. It used to be I could fly out to a site, rent a car for a little over a hundred a week and rent a room cheaply. Unfortunately, for whatever reasons, the car rates have tripled and have consistently been so for the last year. You may get a rate slightly cheaper if you rent for a whole month, unless you find yourself laid off early. With the flattening of the per diem, at $110 per week, when I subtract food, a car rental, and a room it will effectively make the per diem a wash, or break even.
Now, take the wage. Assuming pay of $29/hour of the non-outage week you get a gross of $1160 or net roughly of $928. Compare that to my unemployment of $571, I am only net-netting $357 that week, or roughly $8.90 per hour, less than minimum wage in my state. When comparing an act, you must weigh against the alternatives. We don't go on the road to see the sights; we are mercenaries. Now, take the subsequent weeks of 6 12 hour days, where all you do is work and sleep, your gross $29*88, or $2552 gross or $1914/week. Subtract unemployment and your net-net is $1343/week or $18.65 per hour.
At some places like Seattle, the minimum wage is $15/hour. You are effectively driving across country for 3 days unpaid each way, with the exception of being paid travel of $750 (Many capped out at $500) putting wear and tear on your car, or flying to only beak even with per diem, to only earn effectively $3.65 per hour more than minimum wage? You are away from your family for months on end to mainly pay the hotels, car rentals and restaurants? You can't recover those times like when your baby firsts walks, or talks from your motel room.
Some will say there is a flaw in my logic, that I am adding unemployment in the mix. If you don't take all your unemployment, it is lost so the calculation is valid. I knew this tipping point would someday come, with the wages repressed and our costs going up.
The situation is more pronounced if you make a lower income, such as deconnners. Yes, you can lower costs by double/tripling up on rooms and eat at McDonalds and die young.
In an industry where the alternatives to road life are about the same, why do it? Take the time and get a good local job.