Another staking question

[Tworivers1]

I'm going to try something different this year on staking my tomatoes and wanted to get some opinions on spacing. I have a 24' x 4' raised bed and I am going to put t posts every 8' on both sides and then attach a 24' length of field fence horizontally and then just thread the plants through the 6" openings as they grow.

My question is how many tiers of fence do you think I would need and how high should I position them on the t posts. I am growing all indeterminates except for Danko.

Thanks for any suggestions.

Mark