has an instruction item, I think video and written, that was excellent. I made my own. It was a winter project
. I used clean thin plastic to make a pattern. It was a lot of work, but I can not say how long it took me. I do think they will add years to the life.
I did not do this on mine but if you hate arriving with a wet seat, I was going to make a flap of material that you could lift
up and cover your rear while underway.
I made portions of mine out of "boat blanket", a material from sailrite
. It is the same stuff that you can make fender
covers out of.
Get some netting material and elastic to make some pockets. I made a large pocket at the front made of water
I am a little anal. I even made a cargo net to strap to the handles (suspend) so when you are bringing a lot of stuff to your boat, it does not get wet in the bottom of the boat.
If you wanted to go cheapo and easy, buy some boat blanket and cut and glue it to your dinghy. For sure take this with a grain of salt
but it is the only way I can see you getting it done for your goal of $100.
I am a little different so take everything with a grain of salt