303 aerospace protectant offers some of the best uv protection on the market so we are happy to be compared with their products. The comparable Boat Bling product to be used on vinyl, leather, rubber and plastic would be Condition Sauce which offers similar UV protection plus moisturizer/conditioner.
Today's marine vinyl is typically more plush and offers greater texture options but from our experience tends to deteriorate faster than that offered in the early 2000's when exposed to UV or harsh chemicals so it's important to protect it with your product of choice.
Be sure to stay clear of petroleum based products like armor all which will remove the UV protection built into the material ultimately causing more damage long term and you should be fine.
Any detailed questions? Feel free to email me firstname.lastname@example.org
. Working the LA Boat Show this weekend but will get back as time permits.