Thank you for linking to something that costs more and doesn't work as well. I have tried those. Nothing compares to how great these little cheapy filters can be.
Cichlid Junkie--your problem is EASILY solved. Figure out what size your power head intake is. Find a fitting that will fit it. Then get a step up to a 1 inch or 1.5 inch pipe. It may take a few different bussings to get it where youw ant it, but they are like 45 cents and you can glue them so there is no fear. I found that by adapting up to do two 90 degree turns did lots. It makes the unit more compact and is less unsightly. This way it can be hidden with the filter running horizontal with the powerhead above it. You can do this with one or two 90 degree fittings.
Or simplify.... cut a rectangle of your floss mat that will reach from bottom to top of the tank. Poke a hole in it near the bottom.
Put a few inches of tubing on your powerhead outflow if it needs it for this. Push the extended end through the hole in the floss.
Set the powerhead in a back bottom corner of the tank and push the floss against the walls to form a triangle in the corner. The less fittings and tubing you add to the powerhead, the more power it has.
Since all of the floss is now vertical, you don't get those dead spots where the floss rests against the bottom or has debris landing on top of it. If you want to doll it up a little you can add rails to put a pretty curve into the floss as suggested below.
....or you can let the suction of the pump hold the floss in place.