There is quite a market for Flow Through shares that would look like corporate buyers.
A lot of Flow Through shares are taken up and packaged by investment companies, and sold to individual investors. There is a lot of good information available on a site by Mineralfields, including a Power Point presentation with tax info examples. Having a number of different flow throughs bundled reduces the risk you have with individual shares.
http://www.mineralfields.com/index.cfm
The PP Presentation: http://mineralfields.com/pdf/MFPP_2008.pdf
I have no connections, interests, or investments with Mineralfields, but may at some future point.
Deke