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Rough Percentages

Thu, Jul 20 2017 3:37 PM (19 replies)
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  • Benny33
    11 Posts
    Sat, Nov 17 2012 7:28 PM

    How come if a ball is 100 yards from the pin and in 30% rough the correct distance to the pin is not 130 yards. It should be if your are using basic math, Perctentages are off when you do the math.

  • courteneyfish
    15,796 Posts
    Sat, Nov 17 2012 9:32 PM

    The percentage shown is the amount of the ball that is covered. It bares little resemblance to the amount of power needed to reach the pin. What it is buried in affects the power needed too.

  • Benny33
    11 Posts
    Sun, Nov 18 2012 8:20 AM

    Thank you.  If that is the case how do you judge which club to use?

  • fairground11
    1,211 Posts
    Sun, Nov 18 2012 9:44 AM

    Benny33:

    Thank you.  If that is the case how do you judge which club to use?

     

    practise,practise and more practise

     

     

     

    p.s did i mention practise

     

  • Oldbayrunner
    1,774 Posts
    Tue, Nov 20 2012 5:49 AM

    Some people go by feel, some go by calculating their shots based on distance, Elevation, wind, use of bottom and lie factor.

    For simple calculating  your shots;

    Head wind = wind divided by 3..... Tail wind divided by 4 

    Elevation divided by 3.... Bottom add 4-5 yds....

    example 152 yds 10mph head  9 foot up elevation fairway lie

    152 + W (10/3) 3 + Ele (9/3) 3 = 158 + bottom 4 = 162 Effective yds using bottom

    Then effective yds divided by club = meter percent to use (the more accurate you are on your actual meter percent the more accurate the shot)

    Example: 162 yds / 170 club = 95% meter use

    Miss dinging results in loss of yardage so if you use that method to compensate for wind you will need to compensate for distance loss by slightly increasing meter percent.

    This is a rough guide and other factors such as your clubs and ball distances effect it so knowing those can be crucial.

    For lie factor I take my Effective yds and divide those by various factors 

    20 - 25% rough  0.97%

    30-40 % rough   0.89%

    40-50% rough    0.80%

    Example: D 152, HW 10mph, ELE 9, 30-40% lie rough

    D 152 + W (10/3) 3 + E (9/3) 3 + B 4= 162 / 0.89= 182 Effective rough distance (i use bottom on these shots at grass line)

    Like I mentioned these are simple rough calcs that can be effectively used to get reasonable accurate distances the rest is practice adjust , practice adjust and more practice using the same equipment. Then when you change that then it is relearn and practice, practice, practice.

    For a really good calculator go to SGTBilko profile and download the one from the link on that....There are two so whichever you use is up to you, The one I modified I added the factors for angled winds and elevations. Then you can add the lie factor calcs to those calculations easily .

  • YankeeJim
    25,827 Posts
    Tue, Nov 20 2012 6:23 AM

    Benny33:

    Thank you.  If that is the case how do you judge which club to use?

    For 30-40, add 1 club. For 40-50, add 2. This will get you close enough to figure what actually works for your setup.

  • Neilribeiro
    1 Posts
    Tue, Nov 26 2013 8:51 PM

    When in the rough I estimate 5% more for 20%, 10% more for 30% and 20% more for 50%

  • Chinajohn
    1,190 Posts
    Thu, Nov 28 2013 9:01 PM

    As mentioned the percentage is the amount the ball is covered. However, what it's buried in completely changes the power needed too. Off the top of my head, the different lies are:

    Rough,

    Deep Rough,

    Sand,

     Fescue,

    Weeds,

    Mulch

    There are probably others but if you hit a shot from 40/50 of any of the above with the same power you are going to get VERY different distances, and that's before you get the WTF shots.

  • RKPayne
    213 Posts
    Fri, Dec 19 2014 4:19 PM

    For Cleveland wedges, I add nothing for 20-25, 5 yds for 30-40 and 12 yds for 40-50....;may not be close, but gets on the green!! lol

    Bob

     

  • ApexPC
    3,164 Posts
    Sat, Dec 20 2014 9:33 AM

    Chinajohn:

    As mentioned the percentage is the amount the ball is covered. However, what it's buried in completely changes the power needed too. Off the top of my head, the different lies are:

    Rough,

    Deep Rough,

    Sand,

     Fescue,

    Weeds,

    Mulch

    Light Brush

    Brush

    Heavy Brush

    Hard Sand

    Light Fescue

    Heavy Fescue

    Weeds usually means a lost ball.

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