I currently play on a handicap of 4 at a country course in Victoria Australia. My questions are in relation to grip size. I have been using standard grip sizes for more than twenty years. I recently had a few hits with a friends clubs that were fitted with Jumbo size grips and was very impressed. This brief test gave the feeling of having much more control over the club head and ability to shape the shots (although it was with irons). Would changing my grips to Jumbo grips affect the swing weight of my clubs dramatically, particularly my driver (Taylor Made 580XD regular flex, Irons are King Cobras with senior graphite shafts)? Also if I changed to the larger grip size is this likely to increase the potential for a slice or hook and/or reduce or increase distance?