Trident 15 sonar shield Fishfinder Size?

I have a 700 series Humminbird that looks like it will mount ok, but it looks like it won't allow for enough clearance to completely shut the hatch. Is the 500 (580 & 565) series the largest Humminbird ff's that will fit in there and still be able to shut the hatch?

Seems like I find the answers to my question after posting it; looks like this is the consensus on ff size and the sonar shield:
http://www.norcalkayakanglers.com/index.php/topic,15402.0.html

My 798csi fits, BUT you have to mount it properly. The mounting holes are more to the port side than with the 500 or the 300 series. It has about 3/8" clearance on the sides and face when folded down. I move it between my Whaler and my T15.

Got it, I am assuming this will allow clearance for the off center "hump" on the back of the 700 series. Thanks for that. I will try again. I had the same plan for swapping this out.

I tried taping it in place to test the fit but never quite got it right.

Otherwise I was thinking about selling it and getting a 580. 

The 7 series kinda fit but you can't quite close the lid all the way.  3 and 5 series fit easily.  What ever you do make sure to get the scupper transducer, it is the way to go.

I think that grayscale will be better for battery life anyway.

Thanks!