M_Boats: replacing the center board pennant

My Montgomery 15 needs to have the center board pennant replaced. I've read the archives but still have some questions. 1) Does the pin have to be removed? 2) Does the board have to be completely removed from the boat? 3) Is it alot easier taking the boat to a boat yard relative to raising the boat on blocks yourself and replacing the pennant? 4) Do you need assistance raising and lowering the board? Thank you, Rich Cottrell