Got some more work done in the early hours, havn't been able to log on recently so put in abit of overtime online
Apologies for the amount of pics, but it helps explain whats going on..
Going to add one-way steel doors at either end, for player entrance. Just going to have pressure plates on the outside so once your in you can only go down. ( if other players are spectating they can let the winner out, if only two players they can just remove the doors and put them back when finished. ) Iron bars will also surround the outside, on the wood blocks just back from the stone slabs. The slabs make it just too high to jump out without obstructing too much view.
This is the viewing platform above the arena, once I get more glass it'll extend across the middle of the arena, with glass panes to stop players above falling onto the play surface. I'm trying to use as much open area as possible to make for better spectating without letting players on the outside actually be able to access the spleef surface except through the doors to stop interference.
And this is the lower level where the loser meets his/her end. Its abit more of a WIP than the upper level, again, need more glass as I realised with just the panes there players could jump out the sides if they tried hard enough. I'm going to replace the panes along the water current with glass blocks so theres no chance of escape
(Apologies for the night pic it was bedtime and I couldn't wait for the next day cycle.)
Finally, this is the whole structure, it's not too big and I'd love if someone could come up with an idea or help with plans as to what should surround it, I'm not too savvy at good looking MC architecture and I see this as more of a community building for everyone to play with and enjoy so theres no problem if you'd like to add a structure around it all in any style, aside from looking like a big stone box wich is what it'll end up if I do it.
Thanks for your interest, and patience with this one, nearly ready to let the death spleef begin!