Anchoring a Water Trampoline

[feb]

Wednesday's storm was the last straw for my 12 year old chain used to attach my cement anchor block to my water trampoline. It had corroded down to wafer thin. Unfortunately, my father, who has since passed on, installed this anchor block so I have no idea how heavy it is. I plan to visit Watermark this weekend and pick one up, but just curious how heavy those of you with water trampolines think it needs to be and if you have any alternative ideas.

Thanks.