Hand lay up,flash tape

Hi everybody,

I usually work by vacuum bagging, but when I have a mould with a lot of edges and difficult angles to be reached, I prefer to work with the hand lay up.
In this way, I have read that could be also used a flashing tape and the peelply together. How do you proceed using both?
Do you heat the mould with the heating gun? I have only a simple phon at the moment and I use only the peelply over the carbon.

Thanks,

Alessandro