Another option, if you can't get a small hole, is to use a 10mm eyepiece in front of it.
I've lost the formula, but a 10mm eyepiece about 35cm from a 5mm LED produces a small enough source for the collimation of a 250mm SCT about 60m away. I used irrigation tubing, an LED torch (an old Fenix L2T in this case), and a few homemade baffles in the tube to build mine, along with a cheapo Meade plossl. Baffles were made from irrigation tube caps with their outer edges trimmed off and a small hole drilled through the middle.
I'm also willing to bet that Ozstockman could make some mighty fine holes with his laser
Regards,
Eric