To Skeg or not to Skeg

I am in the process of modifying a 17' long,  8' beam relatively flat bottom (5 degrees at the transom) power boat by adding a cabin.  I know this will increase windage considerably.  Question is:  Should I be adding a small skeg to help allievate any increase in leeway in a wind?

 

Any thoughts would be appreciated as to yes or no or to the size and depth of the skeg.  This is a planing boat but I am not worried about high speed.

 

Thanks in advance.

 

Update on 62 Connie

Kruz,

 

Thought I would update the group . We took the old gal twenty miles southest of Miami to Elliot Key on a nice trial run.

 

All systems go!!!! This is getting exciting.

 

 

Geo