Go to Divegearexpress.com...They have helmets w/the different attachments.....As far as lights, go to Leisurepro.com, they have a large selection........Keep in mind when you're fossil hunting you'll be close to the bottom, so you don't need 800-1000 lumen lights, it's a waste........I use the UK SL4 eLED L1, 400 lumen lights and they work fine.....They can be attached to a helmet or w/a light 'sock' to the back of your hand........Burn time of 10Hrs on standard 'C' batteries.......I use the same light for cave diving.........W/a helmet, light sock and two lights, it's way less than the $580.00 the LDS is trying to sell you.......