Hi Vic,
I have been a part-time investor for a few years. Yes, it can be frustrating since you have limited time to devote towards your investing career. Here is how I look at investing part time:
!. I use my time more effectively since it is limited.
2. I have become an expert in my select market so that I can compete at a high level.
3. My strategy is buy n hold not flip, so I can bid a slightly higher than if it were a flip provided the numbers work.
4. I don't worry about my competition although I am aware of them. If the numbers work for me that is all that is important to me.
5. Sometimes we can be so conservative because we are afraid to make a mistake it paralysis us.
6. Believe in your numbers. If the market you are competing is to competitive you may want to select a different market. I have a few cities by me where the competition is to strong as you explained in your blog I selected a different market. Just pick a solid market.
7. If you become an expert in your market you will be competitive.
Hang in there you will be successful.