The summer sun on my distance rides this summer has proven my sun screen inadequate. I am looking for best practices/recommendations for both sun screen and summer weight bike tights/leggings. I think I'd really prefer an spf rated bike tight, but do not see any summer weight in internet searches...leggings/leg protectors seem to get mixed reviews.

My best combination so far was applying an spf50 about an hour and a half before the ride, then using an spf30 spray 15 minutes before getting on the bike (stuff I had on hand). This may be as simple as someone posting "I use such and such 100spf spray...follow the directions." Thoughts?