Best way to degrade my shield (non member account)

[BoyBetterKnow]

Just got my main account back and he has this rune berzerker shield and I want to sell it.

I'm trying to degrade it but I can't think of any multi areas that will help me degrade it faster (f2p).

Any help please.

[[Jay]]

Only place I can think of is flador castle, white nights.

[BoyBetterKnow]

FORGOT THERE

Thanks.