Large pond with fountain. Looks like it may hold some fish.

Looks 500ft across and 2000 feet in length.

No underwater structure "that I know of" Mainly grass bank all the way around.

Orldando.

What would you throw? I am thinking of just tossing out some weightless plastic creature baits and slow reeling them back to shore.

What would you do. Reason I'm asking is I used to live at a place that had a pond/lake with a fountain and that little thing harvested some BASS! I am moving and there is a pond right next to my place.

If you're saying the grass all the way around the pond is actually in the water you could try a Skinny Dipper on the edges.

roostertail or mepps spinner

shallow diving crank or 3/16 oz chartreuse and white spinner bait for me

If there are bass in it, but in low numbers I would use a natural colored crank. If bass are abundant enough, I would go with a zoom super fluke.

With the pond being a decent size I would say use presentations to cover water and switch to the fluke if you find bass.

just about everyone is going to name something different, my advice would be to throw what youre comfortable and confident throwing

For that I would just keep it simple.  Maybe just throw a weightless Trickworm or a Senko.

My top baits for places like that for when you just want to see whats in it are in no partricular order:

zara puppy

1/8 spinnerbaits

4 inch senko

trickworm

1/8 and 1/4 rattle trap

small rebel pop-r

x-rap #8 (first choice)

If i'm pond prowlin these are what I grab first.

i fished a pond with similar dimensions and conditions, i used a blue and silver strike king diamond shad, and i caught the bass that you see in my avatar picture

Lethal Weapon Precision

roostertail or mepps spinner

X2 I would get the larger sizes, like 1/2 oz. In addition, topwaters around the grass in the morning should work. I have a part of one of my rivers that is a lot like what you explain and I use a lot of Scum Frog Bigfoots to bring up the bass around the weeds. Here's a small example, look in the background at the reeds. It seems to match what you are describing. Late summer is awesome up there when the shiners are spawning and the bass a busting them on the surface.

If you try the slower creature baits or stickbaits first you won't be able to cover very much ground. But if that's what you're comfortable with, go for it.

Personally, I would throw smaller search lures to get a feel of the place. First off, I would probably try a 1/8 oz Strike King buzzbait, 1/4 oz spinnerbait, and a small to mid sized lipless crankbait fished slow with the rodtip high to keep it shallow. You can cover a lot of water with these lures, and hopefully find some fish.

After that, if I had some luck and found a few fish, I would start in with the jigs, T rigs, and heavy spinnerbaits, so you can begin working the bottom and probing the structure, trying to find out why the fish you caught chose that spot.

Once you found the structure, it's game on.  Then you can start dropping Senko on 'em.

Good luck.

Bandit 100 series

Zoom trick worm, weightless and weedless

Booyah spinnerbaits

Booyah bed bug or grass jigs

rapala original floater

    -gk

I fish ponds in orlando too, and i kill it with swimming flukes and Bitters naked swimmer.

Probably some topwater frogs like a horny toad. and maybe a senko, or spinnerbait.

It never hurts to look for some spots along the grass shoreline where mud is visible and throw a crawfish type bait like a hudd bug.