Time trial saddle

[Bullet]

Can anyone help me with some advise on saddles.

 

I'm currently using a profile design stryke saddle. My plan is to do the ironman. The big benefit of the saddle aparently is the cutout has additional supports so it does not collapse. Problem with me is than I'm a bit heavier and now I actually sit on these support. After about 100k's it feels as if I'm sitting on blads. Can anyone recommend a saddle for the ironman (time trial position) that is suitable for a heavier rider.