Conceptually, I get the importance of lifting weights as one ages. But it is interesting that the shreddiest of 40+ shredders don't seem to train with weights.
Surfing
Kelly: I once saw a photo of him attending CrossFit with Shane, but he seems to avoid weights 99% of the time
Taylor Knox: he seems focused on body-weight exercises, though kettlebells enter the picture occasionally. he's said explicitly that he no longer lifts weights.
Bobby Martinez: I believe he's primarily boxing as cross-training, but not super confident on this
Rob Machado: Assuming primarily yoga
Mike Ho: ???
Snowboarding
Terje: relies on yoga, soccer and skateboarding
Skating
Tony Hawk: swimming as cross-training
AVE: CHEK training
Danny Way: CHEK training
Do you all think that sufficient strength training can be done without weights?
EDIT: Do you think that lifting weights is bad for shredding as you age? Are there any older pros who still shred and also lift weights? Shane Dorian comes to mind, but that's all I've got.