lifting strakes

Hi everyone. I trailer my 2017 Benny - obviously taking it in & out of the lake several times a weekend. I recently bought some 24 inch straight trailer guides to mount on the inside of the toons but now I'm questioning my purchase. My dilemma is this - it appears the lifting strakes on the...

What's the difference between Lifting Strakes part#  900289 and lift strakes part#  903056.  Both are for 2 toons. I assume one is for the outside and one is for the inside of the toon but, no pictures or description to verify this.