Haha, I found the same thing while making sure Elytra would still work with Squake. From what I gathered, you can only trigger the Elytra when you are falling down, so if you wait to use it until you start coming down from your jump, you'll trigger it every time.
Probably not going to happen. Surfing is a somewhat complicated combination of many different mechanics that don't transfer very well to Minecraft (sloped surfaces that are too steep to stand on, and how velocity is clipped on sloped surfaces), so any implementation would have to be a very rough approximation that I don't think would be worth it.
I have alot of trouble with downloading this mod. just to clarify i do have Forge installed and my profile is set on the forge version
But when i start minecraft up it stops me and says the following: ''Squake is missing mods it depends on. Include the following mods or remove squake PlayerAPI: any see 'fml-client-latest.log' for technical information'' If anybody on here can help me out fix this i would be very very gratefull