Hello Bob,
doing it dynamically with a strobe will give you a lot more information, e.g. if the mechanical advance is working, maximum advance, is the timing steady or erratic etc.
Whatever method you use to re mark the timing point, be accurate and also set it to minimise parallax error. Hence mirrors and the like are unlikely to be accurate. A timing pointer virtually touching the crank pulley is pretty foolproof.
Whatever method you use, static or dynamic, that is not the end of the job. You then need to drive it and make you final adjustment. You probably have a screw adjustment on your distributor, set that midway when you do the original timing adjustment so that when you do a road test you can easily adjust the timing one way or the other. If you have no pinging then advance your timing until you do, then back it off a little. This should give you optimum timing for your engine and the fuel you use.
Refer to my answer in your other post, set the mixture first.
Alec