The nails will go through the paneling, you just need to pound harder and/or maybe for longer. They go through easier if you are actually on a stud :) We live in a mobile home that's about 20 years old, with wallboard but I know what you're talking about. The other solution is if the item is heavier, buy the wall anchors for hollow walls. You drill a hole the size of the anchor, tap the anchor in and screw a screw into the anchor. Whatever you hang on the wall will stay without the nail sagging and dropping it to the floor.

As a base line I use 10k a floor. In small homes that is overpriced and in large homes it is underpriced but it gives me a base line to start with when I do a walk through of homes. I am not an electrician and this is ND prices so it may vary in your area but in my area it is close enough to get a handle on it. A little more background on my number. I have worked for handyman over the years as a side job, day job is an engineer, and I have been trying to get into renovating homes so I have been doing a lot of research on pricing. But it is also based on personal experience. I have done a lot of wiring for myself and have helped family out over the years and scaling those jobs up I get to that 10k mark. Another to make note of is that the 10k is for the electrical work. You are looking at another couple thousand to repair all the holes that the electrician punches in the walls unless you are doing the drywall repair. A single wide should be less then that and the wiring should be less as well but it depends on your area of the world. In ND a good electrician is 50 bucks an hour in New York your looking at a 100 or more an hour so start with that number and get quotes. Check their hourly rates and see where you end up. Honestly in a home that size if you tell them to have at it and punch as many holes as needed instead of having them baby step around and try to minimize destruction you should be looking at 40 to 60 hours of labor roughly or less then a week for two electricians to do the job. If you looking for savings find an electrician with an apprentice. You will pay a lot less then and the master electrician accompanying the apprentice is liable for his work so you will still get a good job.

I have used Tripit, but generally use Delta's app and it's features for flight notifications. It is my airline of choice. Same for hotels where I can check-in early and even pick my room.

I went to your profile page but I cant figure out how to message you, but maybe there's something I'm missing. Have you enabled it at the bottom of the the advanced settings screen in your profile? You could also just message me your email address and we'll correspond that way. I haven't had anyone send cuttings before, but regular mail will take 3-4 days at most, so I think putting the cut end in a wad of moist paper towel and sticking the whole thing in any old plastic bag should work fine. It would get squished in an envelope, but you have a small box? If not, the P.O. always has free self-sealing small priority mail boxes in a display. Use whichever one works for you and tell me how much it costs so I can send $$ for either regular or priority postage by PayPal or mail.