spray rails

[scrapper]

my 23,the boat is probably the best boat i've ever owned,and i honestly mean that.the only draw back is the wet ride.do spray rails help ? and where is the best place to mount them ? i asked a local fiberglass guy about this,he was telling me,and showing me,a boat he just made shields for.question here is,does anyone's boat have these shields ? and tell me your experience,please be as honest as possible,this isn't a cheap job.
thanks