What size cover for 17 Angler w/ poling platform?

[Megalops]

Looking for an off the shelf cover (not custom) that will go over my poling platform and engine as well as the entire boat.

Doesn't have to be a perfect fit but close would be nice.

I won't be trailering the boat with cover.

I've been looking online at some high quality Sunbrella closeout covers but they are not returnable so I need to get the measurements right.

Thanks in advance for help.