Shortboard for a (land) longboarder

Hey guys,
I've surfed before- not too often as I don't live at the beach. I longboard- as in on pavement- and am good at it. I'm quite a progressive rider- busting slides- carving- balance isn't a problem, I don't think. When I went out surfing I was on a longboard and a friend's 5' 8'' fish I personally felt that the longboard was a little clumsy and harder to get up on. It was a little slow and so maybe I don't think I was doing it right. My friend's fish had a wayyy better feel- Granted, I didn't get up everytime- thinking maybe 3/5 waves. Once I was up though- it was great. Now since I'm moving- I'm thinking about getting my own board since I'm going closer to the beach. Have you guys experienced this? That it' easier to get up on shorter things? I mean two years ago getting up on a bodyboard was no problem since it just easily slides underneath my feet. I'm just worried about it being different in bigger waves. I tried my friend's board in around waist/chest-high. Let me know if you guys and gals have any ideas- thanks!
I've surfed before- not too often as I don't live at the beach. I longboard- as in on pavement- and am good at it. I'm quite a progressive rider- busting slides- carving- balance isn't a problem, I don't think. When I went out surfing I was on a longboard and a friend's 5' 8'' fish I personally felt that the longboard was a little clumsy and harder to get up on. It was a little slow and so maybe I don't think I was doing it right. My friend's fish had a wayyy better feel- Granted, I didn't get up everytime- thinking maybe 3/5 waves. Once I was up though- it was great. Now since I'm moving- I'm thinking about getting my own board since I'm going closer to the beach. Have you guys experienced this? That it' easier to get up on shorter things? I mean two years ago getting up on a bodyboard was no problem since it just easily slides underneath my feet. I'm just worried about it being different in bigger waves. I tried my friend's board in around waist/chest-high. Let me know if you guys and gals have any ideas- thanks!