Rubber Hatch Seal Strip, unusual, available?

Hi there, im about to do the edge moulding on my hatch lid and want to continue using normal cope moulding for the edges.
Im using this type

I dont want to go down the rubber strip type to hide the pop rivets as I dont fancy having the rubber showing on the outside.
Ill be using 3mm alu bar on the inside. Therefore can you get a rubber seal that will hide the ugly side of the pop rivets?
Crude diagram attached!

Above im trying to show a rubber seal idea, the trough in the middle would hide the pop rivet heads?
Any help or better suggestions would be great!
Im using this type

I dont want to go down the rubber strip type to hide the pop rivets as I dont fancy having the rubber showing on the outside.
Ill be using 3mm alu bar on the inside. Therefore can you get a rubber seal that will hide the ugly side of the pop rivets?
Crude diagram attached!

Above im trying to show a rubber seal idea, the trough in the middle would hide the pop rivet heads?
Any help or better suggestions would be great!