If the trap doesn't work (I've always tried a trap first), I have used the hook method. How ever not just any size line and hook. Aside from reef keeping my other passion is fly fishing and fly tying. If you do end up needing to use a hook and line, I reccomend using the smallest hook and line possible (always bardless of course). IME a size 28 to size 32 with at least 8X tippet works really well. This is what they looks like;
http://www.troutnut.com/topic/2426/Fruit-fly-hook
I like the tiemco branded hooks.....