hell dont worry about that part. they didnt work. roflmbo.
Family selection definitely matters. I have had numerous hooch trout travel 4+ft to hit very specific fly patterns after ignoring many others.
Fly fishing out preforms spin fishing 98% of the time. I do both methods but for trout I will almost always use a fly rod. There are techniques and set ups I have access to with it that allow me to catch fish spin fishermen can't. Plus if I hook a large fish I can land them faster with the larger rod. Back in my prime (aka before wife and kids) could usually have 20+in fish in the net in under 2 minutes