In the perl golf community it is in fact expected that golfers learn from solutions to previous golfs. Many of the standard tricks of the trade have not been invented by the people using them.

If it turns out that some specific but not generally known piece of knowledge helps enormously in a golf, it is the habit to inform the party holding the golf so they can decide if they want to add it to the challenge notes. That way everyone may play on a more level field.

I have already told fonality about an existing golf that helps a lot, but I forgot to suggest a link to it on the rules page.