I have some natural spawning structure, mostly FA right now but I have not added anything for them to spawn on. Right now I have held back raking FA due to the sheer numbers of freshly hatched GSH fry present in the open water pockets of the floating FA around the pond edges.

http://www.extension.org/mediawiki/files/b/b8/Golden_Shiner_Culture_A_reference_profile.pdf

Quote:
Most golden shiners attain sexual maturity during their first or second year of life, however, some are known to spawn at 7�8 months of age. Their breeding season is prolonged, usually extending from March through October, with 4 to 5 spawning peaks per season. They spawn early in the morning when water temperatures reach 68�80F (20�27C). Spawning takes place over submerged vegetation where the females lay adhesive eggs. A female can deposit approximately 10,000�20,000 eggs which are 1.0�1.4 mm in diameter after fertilization. The eggs hatch in three to four days and larvae are about 3 mm in length. The larvae form schools just below the water surface and feed on small planktonic organisms.