I would use the trailer while still on warranty. If there is something wrong, the cracks will grow and there will be no doubt of defective material.
Spider cracks are typically non-structural damage to the gel-coat often caused by flexing.
With all the boats in Florida, there should be some fiberglass experts.
2008 Ram 3500 With a Really Strong Tractor Motor...........
LB, SRW, 4X4, 6-Speed Auto, 3.73, Prodigy P3, Blue Ox Sway Pro........
2014 Sandsport 26FBSL