Hi, did my first trial yesterday and thoroughly enjoyed. One thing I did notice was that my suspension was bottoming out quite a lot, now I'm about 15 stone so wondering if I should go for harder springs? 

I have contacted splatshop who say fork springs are not available anymore. Any thoughts on a way round this? Could I sort it with a bit of preload, thicker oil etc? Unless of course anyone has or knows where I could get a stiffer spring from?

Any advice gladly received.

Seems like there was a thread about mountain bike springs being the same about two years ago if you do a search on here.