4-1 Sails:  It is the intent of these rules that the class sails conform with the various national and international measurement rules. Sails will be measured in accordance with the recommendations and rules of IYRU. All sail measurements shall be to projected points, except for the mainsail and jib heads. All stock Horizon sails made prior to September 22,1984 are grandfathered, and are to be accepted as class legal.

4-2  The Wylie Wabbit shall be raced as a one design with a maximum of 3 sails. These sails shall consist of: a mainsail, a spinnaker, and a 105% jib. Substitutions will be allowed during a regatta in case of irreparable damage. A storm jib with a maximum area of 20 sq ft. may be carried and will not be counted as one of the three. Only sails which have been measured, approved, and signed by an official measurer, may be used in class racing. A 150% or 155% genoa is prohibited at national one design regattas. Use of genoas at local regattas or PHRF events is left to the discretion of the local fleet.

4-3  New Sails: Only one main, class jib, and spinnaker may be measured in any one calendar year. Exceptions may be made by the class measurer in the case of irreparable damage.

4-3.1  Sails made of, reinforced by, or containing Kevlar material, first measured after September 1, 1984, will not be allowed. Sails must be constructed of specific materials. Mains are to be constructed of Dacron or Mylar, or their generic equivalent. Jib and genoa material is unrestricted. Spinnakers are to be constructed of nylon. The intent of this rule is to eliminate any material not specifically allowed.

4-3.2  Class Jib:

4-3.2.1  No Jib shall have an LP larger than 7'. The luff is limited to 18.75' with a minimum of 2% less. The maximum girth, including the luff tape, at 18.75' above the tack is 2 inches. The use of two sets of snaps or hanks that allows for the use of more than one luff curve on a single jib is allowed .

4-3.2.2  Jib battens may be carried, with a total of 3 allowed. Battens are to be spaced equidistant on the leech. Batten spacing tolerance is + or - 2". The top batten may be full length. Maximum length of each of the other two battens is 15.5".

4-3.2.3  The jib leech may not extend beyond a straight line drawn from the aft edge of the head to the clew. The luff shall be straight while the leech is measured. The intent of this rule is to prohibit jibs with roach.

4-3.3  A 155% genoa may be used as an option by the local fleet for local class or PHRF racing. The luff shall not exceed 20'9", and the L.P. shall not exceed 10'01".

4-3.4  The spinnaker shall have a maximum luff of no more than 21'6", and a maximum girth of 14'. The spinnaker cloth weight shall be a minimum of 40 grams/m².

4-3.5  Class Mainsail:

4-3.5.1  The mainsail maximum leech is 25'9". The mid- girth maximum is 6.6'. The upper mid-girth maximum is 3.9'. Mainsail girths are to be measured in the same manner as the jib mid-girth, indicated in paragraph 4-3.2.3, but using the intersection defined by the top edge of the headboard with the forward edge of the bolt rope. For loose footed mainsails, the foot round may not exceed 4" at center and 3" at each quarter point; measured below a straight line from the projected corners while the sail is in fan. The headboard shall be not longer than 6". Reef points are allowed.

4-3.5.2  Four mainsail battens are allowed and shall be evenly spaced along the leech. Batten spacing tolerance is + or - 2". The top most batten may be full length. The maximum length of the 2 middle battens shall not exceed 42" each. The bottom batten shall not exceed 30". The purpose of this rule is to insure maximum regatta eligibility using class sails.

4-3.5.3  The class insignia shall be displayed on the mainsail between the upper two battens, and within the upper or middle of the contrasting panels.  Three adjacent panels that contain color, each approximately 36" in height, are required in the mainsail.  Colors are to be clearly contrasting, the middle of the 3 panels may be white.  Sail numbers should follow guidelines set by IYRU and USSA.

4-4  Sailmaker's specifications are as follows:

I = 20'9" P = 23'9" LP = 7.0' (105%)
E = 10'0" J = 6'6" JC = 8'6"