Hi All



Looking at the spi launching options for single handed T 4.9 I've decided that I will probably start with an IO snuffer and work on getting the set-up of the kite (design. sheeting etc) right and then possible review the launch system.



The question I have relates to the angle of the spi pole in front of the boat and which snuffer to use.



The IO snuffer is available here in Australia in two configurations with different angles for the snuffer head. One version has been developed for the Nacra 5.8 with front foil where the spi pole passes under the foil meaning that the pole is pretty low above the water. I've been told by Nacra sailors who use this one that on the 5.8 the low clearance is only a problem when the wind is light and the sea is choppy causing the boat to hobby-horse and the bag sometimes drags through the water. The head of the snuffer is set at a flatter angle on this fitting than the 'standard' snuffer as used by the I 17 etc.



From the photos I've seen the Inter boats have their spi poles, bag and snuffer head way up in the air where it would be affecting airflow over the mainsail up wind.



I'm thinking that the 5.8 snuffer would be the way to go to keep the dirty air down low and reduce the affects up-wind. I guess thi would also enable me to develop a spi with a longer luff which is my aim.



Has anyone got any views on whether there are any advantages of a 'low' pole over a 'high' pole or vice versa. Also what should I be aware of regarding the angle of the snuffer head to the pole (ie which fitting would be better)



While I'm here I'm also intending to rig my boat with a bridle / single forestay rather than twin forestays - is one set-up better than the other when sailing with spis ? My thoughts are that one stay is reduced windage and less likely to get in the way of the spi.



All ideas gratefully received



regards

James



T4.9 AUS 153 "Woof"