I also had friends commenting that my directionals weren't very bright, I also did the tin foil trick with good results. Maybe I'll try the 3497 bulb.
2009 Wee Strom ABS (current)
1987 Harley FXR Low Rider Sport (current - with 206K miles)
2009 Aprilia Mana 850, 2006 SV650, 1984 Yamaha Virago 1000 (all sold)
Silver Strom Club Member #11
Wee Farkles: Russell Day Long Seat, Madstad with Moose Adventure Shield +4'', SWMotech Centerstand, 1'' up & back bar risers, Givi XS308 Tankbag, Aprilia mirrors, Framesliders, Fenda Extenda, Elka Shock.