I thought carloso was a bit hash and short as well. However not without reason as there is a lot of people who expect others to surrender valuable information on request, but didn’t think this one warranted it.
I don’t do this type of work, but a number of factor's are obvious and might influence your decision.
1, Summer is coming up so the interest and need will be there.
2, So will a lot of other people doing the same job.
3, Like everything else, how much work you will get will depend entirely on how much effort you put into getting it.
4, Profitable costs can only be derived at from what your personal requirements dictate, and realised from your own plan and maths. In other words not what the average price is, but what you need to make a profit!
5, Door knocking is the only reliable research to throw money at, and if you are serious, you need to invest both time and effort to make sure you have the right information to base a decision on.
6, Whilst a lot of sound technical advice and information can be acquired from places like CIU, they are also the playground for fiction, especially when it comes to apparent earnings and charge out rates.
Just observations hope they help.